Home / 72,515,135.92-108,775,705.72-21,397,153.76

Finding the Fourth Proportional to 72,515,135.92, 108,775,705.72 and 21,397,153.76

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Solution

The fourth proportional to 72,515,135.92, 108,775,705.72 and 21,397,153.76 is: 32,096,616.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,515,135.92 : 108,775,705.72 = 21,397,153.76 : x
  2. Step 2: Convert to fraction form
    72,515,135.92/108,775,705.72 = 21,397,153.76/x
  3. Step 3: Cross multiply
    72,515,135.92x = 108,775,705.72 × 21,397,153.76
  4. Step 4: Simplify right side
    72,515,135.92x = 2,327,490,500,643,351.50
  5. Step 5: Solve for x
    x = 2,327,490,500,643,351.50/72,515,135.92
  6. Step 6: Final answer
    x = 32,096,616.40

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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.