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Finding the Fourth Proportional to 74,475.52, 102,776.12 and 42,642.88

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Solution

The fourth proportional to 74,475.52, 102,776.12 and 42,642.88 is: 58,847.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,475.52 : 102,776.12 = 42,642.88 : x
  2. Step 2: Convert to fraction form
    74,475.52/102,776.12 = 42,642.88/x
  3. Step 3: Cross multiply
    74,475.52x = 102,776.12 × 42,642.88
  4. Step 4: Simplify right side
    74,475.52x = 4,382,669,752.03
  5. Step 5: Solve for x
    x = 4,382,669,752.03/74,475.52
  6. Step 6: Final answer
    x = 58,847.12

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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.