Home / 72,123,426.24-108,186,325.12-20,309,275.20

Finding the Fourth Proportional to 72,123,426.24, 108,186,325.12 and 20,309,275.20

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Solution

The fourth proportional to 72,123,426.24, 108,186,325.12 and 20,309,275.20 is: 30,464,246.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,123,426.24 : 108,186,325.12 = 20,309,275.20 : x
  2. Step 2: Convert to fraction form
    72,123,426.24/108,186,325.12 = 20,309,275.20/x
  3. Step 3: Cross multiply
    72,123,426.24x = 108,186,325.12 × 20,309,275.20
  4. Step 4: Simplify right side
    72,123,426.24x = 2,197,185,849,738,753
  5. Step 5: Solve for x
    x = 2,197,185,849,738,753/72,123,426.24
  6. Step 6: Final answer
    x = 30,464,246.70

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1.5x scale

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.