Home / 86,650.45-129,980.30-27,490.68

Finding the Fourth Proportional to 86,650.45, 129,980.30 and 27,490.68

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Solution

The fourth proportional to 86,650.45, 129,980.30 and 27,490.68 is: 41,237.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,650.45 : 129,980.30 = 27,490.68 : x
  2. Step 2: Convert to fraction form
    86,650.45/129,980.30 = 27,490.68/x
  3. Step 3: Cross multiply
    86,650.45x = 129,980.30 × 27,490.68
  4. Step 4: Simplify right side
    86,650.45x = 3,573,246,046.25
  5. Step 5: Solve for x
    x = 3,573,246,046.25/86,650.45
  6. Step 6: Final answer
    x = 41,237.48

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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.