Home / 86,120.32-129,194.34-29,976.38

Finding the Fourth Proportional to 86,120.32, 129,194.34 and 29,976.38

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Solution

The fourth proportional to 86,120.32, 129,194.34 and 29,976.38 is: 44,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,120.32 : 129,194.34 = 29,976.38 : x
  2. Step 2: Convert to fraction form
    86,120.32/129,194.34 = 29,976.38/x
  3. Step 3: Cross multiply
    86,120.32x = 129,194.34 × 29,976.38
  4. Step 4: Simplify right side
    86,120.32x = 3,872,779,082.50
  5. Step 5: Solve for x
    x = 3,872,779,082.50/86,120.32
  6. Step 6: Final answer
    x = 44,969.40

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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.