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Finding the Fourth Proportional to 92,903.71, 128,246.33 and 62,729.86

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Solution

The fourth proportional to 92,903.71, 128,246.33 and 62,729.86 is: 86,593.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,903.71 : 128,246.33 = 62,729.86 : x
  2. Step 2: Convert to fraction form
    92,903.71/128,246.33 = 62,729.86/x
  3. Step 3: Cross multiply
    92,903.71x = 128,246.33 × 62,729.86
  4. Step 4: Simplify right side
    92,903.71x = 8,044,873,371.53
  5. Step 5: Solve for x
    x = 8,044,873,371.53/92,903.71
  6. Step 6: Final answer
    x = 86,593.68

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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.