Home / 72,866,082.62-109,283,008.08-21,039,439.88

Finding the Fourth Proportional to 72,866,082.62, 109,283,008.08 and 21,039,439.88

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Solution

The fourth proportional to 72,866,082.62, 109,283,008.08 and 21,039,439.88 is: 31,554,506.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,866,082.62 : 109,283,008.08 = 21,039,439.88 : x
  2. Step 2: Convert to fraction form
    72,866,082.62/109,283,008.08 = 21,039,439.88/x
  3. Step 3: Cross multiply
    72,866,082.62x = 109,283,008.08 × 21,039,439.88
  4. Step 4: Simplify right side
    72,866,082.62x = 2,299,253,278,404,714
  5. Step 5: Solve for x
    x = 2,299,253,278,404,714/72,866,082.62
  6. Step 6: Final answer
    x = 31,554,506.51

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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.