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Finding the Fourth Proportional to 91,900.91, 137,710.94 and 38,563.97

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Solution

The fourth proportional to 91,900.91, 137,710.94 and 38,563.97 is: 57,787.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,900.91 : 137,710.94 = 38,563.97 : x
  2. Step 2: Convert to fraction form
    91,900.91/137,710.94 = 38,563.97/x
  3. Step 3: Cross multiply
    91,900.91x = 137,710.94 × 38,563.97
  4. Step 4: Simplify right side
    91,900.91x = 5,310,679,677.46
  5. Step 5: Solve for x
    x = 5,310,679,677.46/91,900.91
  6. Step 6: Final answer
    x = 57,787.02

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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.