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Finding the Fourth Proportional to 64,081.92, 96,068.36 and 39,139.47

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Solution

The fourth proportional to 64,081.92, 96,068.36 and 39,139.47 is: 58,675.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,081.92 : 96,068.36 = 39,139.47 : x
  2. Step 2: Convert to fraction form
    64,081.92/96,068.36 = 39,139.47/x
  3. Step 3: Cross multiply
    64,081.92x = 96,068.36 × 39,139.47
  4. Step 4: Simplify right side
    64,081.92x = 3,760,064,694.17
  5. Step 5: Solve for x
    x = 3,760,064,694.17/64,081.92
  6. Step 6: Final answer
    x = 58,675.91

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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.