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Finding the Fourth Proportional to 86,150.20, 129,224.49 and 29,990.20

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Solution

The fourth proportional to 86,150.20, 129,224.49 and 29,990.20 is: 44,985.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,150.20 : 129,224.49 = 29,990.20 : x
  2. Step 2: Convert to fraction form
    86,150.20/129,224.49 = 29,990.20/x
  3. Step 3: Cross multiply
    86,150.20x = 129,224.49 × 29,990.20
  4. Step 4: Simplify right side
    86,150.20x = 3,875,468,300.00
  5. Step 5: Solve for x
    x = 3,875,468,300.00/86,150.20
  6. Step 6: Final answer
    x = 44,985.02

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Double scale
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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.