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Finding the Fourth Proportional to 64,781.51, 89,397.68 and 37,937.97

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Solution

The fourth proportional to 64,781.51, 89,397.68 and 37,937.97 is: 52,353.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,781.51 : 89,397.68 = 37,937.97 : x
  2. Step 2: Convert to fraction form
    64,781.51/89,397.68 = 37,937.97/x
  3. Step 3: Cross multiply
    64,781.51x = 89,397.68 × 37,937.97
  4. Step 4: Simplify right side
    64,781.51x = 3,391,566,312.22
  5. Step 5: Solve for x
    x = 3,391,566,312.22/64,781.51
  6. Step 6: Final answer
    x = 52,353.93

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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.