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Finding the Fourth Proportional to 73,651.60, 110,477.40 and 42,461.20

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Solution

The fourth proportional to 73,651.60, 110,477.40 and 42,461.20 is: 63,691.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,651.60 : 110,477.40 = 42,461.20 : x
  2. Step 2: Convert to fraction form
    73,651.60/110,477.40 = 42,461.20/x
  3. Step 3: Cross multiply
    73,651.60x = 110,477.40 × 42,461.20
  4. Step 4: Simplify right side
    73,651.60x = 4,691,002,976.88
  5. Step 5: Solve for x
    x = 4,691,002,976.88/73,651.60
  6. Step 6: Final answer
    x = 63,691.80

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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.