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Finding the Fourth Proportional to 75,332.64, 103,962.30 and 45,122.88

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Solution

The fourth proportional to 75,332.64, 103,962.30 and 45,122.88 is: 62,271.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,332.64 : 103,962.30 = 45,122.88 : x
  2. Step 2: Convert to fraction form
    75,332.64/103,962.30 = 45,122.88/x
  3. Step 3: Cross multiply
    75,332.64x = 103,962.30 × 45,122.88
  4. Step 4: Simplify right side
    75,332.64x = 4,691,078,387.42
  5. Step 5: Solve for x
    x = 4,691,078,387.42/75,332.64
  6. Step 6: Final answer
    x = 62,271.53

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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.