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Finding the Fourth Proportional to 88,872, 122,658.24 and 51,139.20

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Solution

The fourth proportional to 88,872, 122,658.24 and 51,139.20 is: 70,580.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,872 : 122,658.24 = 51,139.20 : x
  2. Step 2: Convert to fraction form
    88,872/122,658.24 = 51,139.20/x
  3. Step 3: Cross multiply
    88,872x = 122,658.24 × 51,139.20
  4. Step 4: Simplify right side
    88,872x = 6,272,644,267.01
  5. Step 5: Solve for x
    x = 6,272,644,267.01/88,872
  6. Step 6: Final answer
    x = 70,580.66

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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.