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Finding the Fourth Proportional to 64,876.71, 89,529.93 and 38,013.87

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Solution

The fourth proportional to 64,876.71, 89,529.93 and 38,013.87 is: 52,459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,876.71 : 89,529.93 = 38,013.87 : x
  2. Step 2: Convert to fraction form
    64,876.71/89,529.93 = 38,013.87/x
  3. Step 3: Cross multiply
    64,876.71x = 89,529.93 × 38,013.87
  4. Step 4: Simplify right side
    64,876.71x = 3,403,379,120.13
  5. Step 5: Solve for x
    x = 3,403,379,120.13/64,876.71
  6. Step 6: Final answer
    x = 52,459.18

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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.