Home / 78,949.04-108,951.18-43,140.56

Finding the Fourth Proportional to 78,949.04, 108,951.18 and 43,140.56

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Solution

The fourth proportional to 78,949.04, 108,951.18 and 43,140.56 is: 59,534.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,949.04 : 108,951.18 = 43,140.56 : x
  2. Step 2: Convert to fraction form
    78,949.04/108,951.18 = 43,140.56/x
  3. Step 3: Cross multiply
    78,949.04x = 108,951.18 × 43,140.56
  4. Step 4: Simplify right side
    78,949.04x = 4,700,214,917.86
  5. Step 5: Solve for x
    x = 4,700,214,917.86/78,949.04
  6. Step 6: Final answer
    x = 59,534.80

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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.