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Finding the Fourth Proportional to 99,957.66, 137,946.90 and 57,529.86

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Solution

The fourth proportional to 99,957.66, 137,946.90 and 57,529.86 is: 79,394.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,957.66 : 137,946.90 = 57,529.86 : x
  2. Step 2: Convert to fraction form
    99,957.66/137,946.90 = 57,529.86/x
  3. Step 3: Cross multiply
    99,957.66x = 137,946.90 × 57,529.86
  4. Step 4: Simplify right side
    99,957.66x = 7,936,065,844.43
  5. Step 5: Solve for x
    x = 7,936,065,844.43/99,957.66
  6. Step 6: Final answer
    x = 79,394.27

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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.