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Finding the Fourth Proportional to 84,658.11, 127,002.71 and 69,002.02

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Solution

The fourth proportional to 84,658.11, 127,002.71 and 69,002.02 is: 103,515.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,658.11 : 127,002.71 = 69,002.02 : x
  2. Step 2: Convert to fraction form
    84,658.11/127,002.71 = 69,002.02/x
  3. Step 3: Cross multiply
    84,658.11x = 127,002.71 × 69,002.02
  4. Step 4: Simplify right side
    84,658.11x = 8,763,443,535.47
  5. Step 5: Solve for x
    x = 8,763,443,535.47/84,658.11
  6. Step 6: Final answer
    x = 103,515.70

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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.