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Finding the Fourth Proportional to 91,641.68, 137,463.80 and 25,977.68

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Solution

The fourth proportional to 91,641.68, 137,463.80 and 25,977.68 is: 38,966.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,641.68 : 137,463.80 = 25,977.68 : x
  2. Step 2: Convert to fraction form
    91,641.68/137,463.80 = 25,977.68/x
  3. Step 3: Cross multiply
    91,641.68x = 137,463.80 × 25,977.68
  4. Step 4: Simplify right side
    91,641.68x = 3,570,990,607.98
  5. Step 5: Solve for x
    x = 3,570,990,607.98/91,641.68
  6. Step 6: Final answer
    x = 38,966.88

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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.