Home / 42,712.72-64,082.79-20,527.71

Finding the Fourth Proportional to 42,712.72, 64,082.79 and 20,527.71

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Solution

The fourth proportional to 42,712.72, 64,082.79 and 20,527.71 is: 30,798.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,712.72 : 64,082.79 = 20,527.71 : x
  2. Step 2: Convert to fraction form
    42,712.72/64,082.79 = 20,527.71/x
  3. Step 3: Cross multiply
    42,712.72x = 64,082.79 × 20,527.71
  4. Step 4: Simplify right side
    42,712.72x = 1,315,472,929.11
  5. Step 5: Solve for x
    x = 1,315,472,929.11/42,712.72
  6. Step 6: Final answer
    x = 30,798.15

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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.