Home / 81,684,557.20-122,377,536.60-66,456,038.80

Finding the Fourth Proportional to 81,684,557.20, 122,377,536.60 and 66,456,038.80

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Solution

The fourth proportional to 81,684,557.20, 122,377,536.60 and 66,456,038.80 is: 99,562,592.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,684,557.20 : 122,377,536.60 = 66,456,038.80 : x
  2. Step 2: Convert to fraction form
    81,684,557.20/122,377,536.60 = 66,456,038.80/x
  3. Step 3: Cross multiply
    81,684,557.20x = 122,377,536.60 × 66,456,038.80
  4. Step 4: Simplify right side
    81,684,557.20x = 8,132,726,320,538,019
  5. Step 5: Solve for x
    x = 8,132,726,320,538,019/81,684,557.20
  6. Step 6: Final answer
    x = 99,562,592.97

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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.