Home / 72,123,429.24-108,186,329.62-20,309,278.20

Finding the Fourth Proportional to 72,123,429.24, 108,186,329.62 and 20,309,278.20

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Solution

The fourth proportional to 72,123,429.24, 108,186,329.62 and 20,309,278.20 is: 30,464,251.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,123,429.24 : 108,186,329.62 = 20,309,278.20 : x
  2. Step 2: Convert to fraction form
    72,123,429.24/108,186,329.62 = 20,309,278.20/x
  3. Step 3: Cross multiply
    72,123,429.24x = 108,186,329.62 × 20,309,278.20
  4. Step 4: Simplify right side
    72,123,429.24x = 2,197,186,265,689,480.25
  5. Step 5: Solve for x
    x = 2,197,186,265,689,480.25/72,123,429.24
  6. Step 6: Final answer
    x = 30,464,251.20

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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.