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Finding the Fourth Proportional to 72,281.60, 108,278.40 and 63,622.40

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Solution

The fourth proportional to 72,281.60, 108,278.40 and 63,622.40 is: 95,306.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,281.60 : 108,278.40 = 63,622.40 : x
  2. Step 2: Convert to fraction form
    72,281.60/108,278.40 = 63,622.40/x
  3. Step 3: Cross multiply
    72,281.60x = 108,278.40 × 63,622.40
  4. Step 4: Simplify right side
    72,281.60x = 6,888,931,676.16
  5. Step 5: Solve for x
    x = 6,888,931,676.16/72,281.60
  6. Step 6: Final answer
    x = 95,306.85

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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.