Home / 68,777,672.80-103,166,509.20-66,132,277.60

Finding the Fourth Proportional to 68,777,672.80, 103,166,509.20 and 66,132,277.60

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Solution

The fourth proportional to 68,777,672.80, 103,166,509.20 and 66,132,277.60 is: 99,198,416.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,777,672.80 : 103,166,509.20 = 66,132,277.60 : x
  2. Step 2: Convert to fraction form
    68,777,672.80/103,166,509.20 = 66,132,277.60/x
  3. Step 3: Cross multiply
    68,777,672.80x = 103,166,509.20 × 66,132,277.60
  4. Step 4: Simplify right side
    68,777,672.80x = 6,822,636,225,437,354
  5. Step 5: Solve for x
    x = 6,822,636,225,437,354/68,777,672.80
  6. Step 6: Final answer
    x = 99,198,416.40

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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.