Home / 72,513,343.42-108,773,627.82-20,705,631.64

Finding the Fourth Proportional to 72,513,343.42, 108,773,627.82 and 20,705,631.64

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Solution

The fourth proportional to 72,513,343.42, 108,773,627.82 and 20,705,631.64 is: 31,059,479.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,513,343.42 : 108,773,627.82 = 20,705,631.64 : x
  2. Step 2: Convert to fraction form
    72,513,343.42/108,773,627.82 = 20,705,631.64/x
  3. Step 3: Cross multiply
    72,513,343.42x = 108,773,627.82 × 20,705,631.64
  4. Step 4: Simplify right side
    72,513,343.42x = 2,252,226,669,787,376
  5. Step 5: Solve for x
    x = 2,252,226,669,787,376/72,513,343.42
  6. Step 6: Final answer
    x = 31,059,479.04

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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.