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Finding the Fourth Proportional to 92,649.71, 139,001.17 and 38,603.87

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Solution

The fourth proportional to 92,649.71, 139,001.17 and 38,603.87 is: 57,916.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,649.71 : 139,001.17 = 38,603.87 : x
  2. Step 2: Convert to fraction form
    92,649.71/139,001.17 = 38,603.87/x
  3. Step 3: Cross multiply
    92,649.71x = 139,001.17 × 38,603.87
  4. Step 4: Simplify right side
    92,649.71x = 5,365,983,347.52
  5. Step 5: Solve for x
    x = 5,365,983,347.52/92,649.71
  6. Step 6: Final answer
    x = 57,916.89

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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.