Home / 68,899,520.90-103,350,121.92-20,378,355.32

Finding the Fourth Proportional to 68,899,520.90, 103,350,121.92 and 20,378,355.32

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Solution

The fourth proportional to 68,899,520.90, 103,350,121.92 and 20,378,355.32 is: 30,567,781.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,899,520.90 : 103,350,121.92 = 20,378,355.32 : x
  2. Step 2: Convert to fraction form
    68,899,520.90/103,350,121.92 = 20,378,355.32/x
  3. Step 3: Cross multiply
    68,899,520.90x = 103,350,121.92 × 20,378,355.32
  4. Step 4: Simplify right side
    68,899,520.90x = 2,106,105,506,334,330.25
  5. Step 5: Solve for x
    x = 2,106,105,506,334,330.25/68,899,520.90
  6. Step 6: Final answer
    x = 30,567,781.59

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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.