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Finding the Fourth Proportional to 64,967.92, 89,657.20 and 38,129.79

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Solution

The fourth proportional to 64,967.92, 89,657.20 and 38,129.79 is: 52,619.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,967.92 : 89,657.20 = 38,129.79 : x
  2. Step 2: Convert to fraction form
    64,967.92/89,657.20 = 38,129.79/x
  3. Step 3: Cross multiply
    64,967.92x = 89,657.20 × 38,129.79
  4. Step 4: Simplify right side
    64,967.92x = 3,418,610,194.78
  5. Step 5: Solve for x
    x = 3,418,610,194.78/64,967.92
  6. Step 6: Final answer
    x = 52,619.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.