Home / 68,777,712.80-103,166,569.20-66,132,317.60

Finding the Fourth Proportional to 68,777,712.80, 103,166,569.20 and 66,132,317.60

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Solution

The fourth proportional to 68,777,712.80, 103,166,569.20 and 66,132,317.60 is: 99,198,476.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,777,712.80 : 103,166,569.20 = 66,132,317.60 : x
  2. Step 2: Convert to fraction form
    68,777,712.80/103,166,569.20 = 66,132,317.60/x
  3. Step 3: Cross multiply
    68,777,712.80x = 103,166,569.20 × 66,132,317.60
  4. Step 4: Simplify right side
    68,777,712.80x = 6,822,644,320,036,778
  5. Step 5: Solve for x
    x = 6,822,644,320,036,778/68,777,712.80
  6. Step 6: Final answer
    x = 99,198,476.40

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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.