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Finding the Fourth Proportional to 99,871.60, 137,823.93 and 54,550.93

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Solution

The fourth proportional to 99,871.60, 137,823.93 and 54,550.93 is: 75,280.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,871.60 : 137,823.93 = 54,550.93 : x
  2. Step 2: Convert to fraction form
    99,871.60/137,823.93 = 54,550.93/x
  3. Step 3: Cross multiply
    99,871.60x = 137,823.93 × 54,550.93
  4. Step 4: Simplify right side
    99,871.60x = 7,518,423,557.75
  5. Step 5: Solve for x
    x = 7,518,423,557.75/99,871.60
  6. Step 6: Final answer
    x = 75,280.90

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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.