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Finding the Fourth Proportional to 74,339.58, 102,446.88 and 72,973.20

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Solution

The fourth proportional to 74,339.58, 102,446.88 and 72,973.20 is: 100,563.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,339.58 : 102,446.88 = 72,973.20 : x
  2. Step 2: Convert to fraction form
    74,339.58/102,446.88 = 72,973.20/x
  3. Step 3: Cross multiply
    74,339.58x = 102,446.88 × 72,973.20
  4. Step 4: Simplify right side
    74,339.58x = 7,475,876,663.62
  5. Step 5: Solve for x
    x = 7,475,876,663.62/74,339.58
  6. Step 6: Final answer
    x = 100,563.88

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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.