Home / 86,590.08-129,885.12-39,882.24

Finding the Fourth Proportional to 86,590.08, 129,885.12 and 39,882.24

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Solution

The fourth proportional to 86,590.08, 129,885.12 and 39,882.24 is: 59,823.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,590.08 : 129,885.12 = 39,882.24 : x
  2. Step 2: Convert to fraction form
    86,590.08/129,885.12 = 39,882.24/x
  3. Step 3: Cross multiply
    86,590.08x = 129,885.12 × 39,882.24
  4. Step 4: Simplify right side
    86,590.08x = 5,180,109,528.27
  5. Step 5: Solve for x
    x = 5,180,109,528.27/86,590.08
  6. Step 6: Final answer
    x = 59,823.36

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.