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Finding the Fourth Proportional to 99,572.86, 137,409.79 and 54,250.71

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Solution

The fourth proportional to 99,572.86, 137,409.79 and 54,250.71 is: 74,865.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,572.86 : 137,409.79 = 54,250.71 : x
  2. Step 2: Convert to fraction form
    99,572.86/137,409.79 = 54,250.71/x
  3. Step 3: Cross multiply
    99,572.86x = 137,409.79 × 54,250.71
  4. Step 4: Simplify right side
    99,572.86x = 7,454,577,710.15
  5. Step 5: Solve for x
    x = 7,454,577,710.15/99,572.86
  6. Step 6: Final answer
    x = 74,865.56

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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.