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Finding the Fourth Proportional to 78,898.57, 108,847 and 48,248.45

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Solution

The fourth proportional to 78,898.57, 108,847 and 48,248.45 is: 66,562.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,898.57 : 108,847 = 48,248.45 : x
  2. Step 2: Convert to fraction form
    78,898.57/108,847 = 48,248.45/x
  3. Step 3: Cross multiply
    78,898.57x = 108,847 × 48,248.45
  4. Step 4: Simplify right side
    78,898.57x = 5,251,699,037.15
  5. Step 5: Solve for x
    x = 5,251,699,037.15/78,898.57
  6. Step 6: Final answer
    x = 66,562.66

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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.