Home / 78,948,650.60-118,449,861.42-42,560,557.28

Finding the Fourth Proportional to 78,948,650.60, 118,449,861.42 and 42,560,557.28

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Solution

The fourth proportional to 78,948,650.60, 118,449,861.42 and 42,560,557.28 is: 63,855,329.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,948,650.60 : 118,449,861.42 = 42,560,557.28 : x
  2. Step 2: Convert to fraction form
    78,948,650.60/118,449,861.42 = 42,560,557.28/x
  3. Step 3: Cross multiply
    78,948,650.60x = 118,449,861.42 × 42,560,557.28
  4. Step 4: Simplify right side
    78,948,650.60x = 5,041,292,111,773,972
  5. Step 5: Solve for x
    x = 5,041,292,111,773,972/78,948,650.60
  6. Step 6: Final answer
    x = 63,855,329.68

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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.