Home / 80,721.86-121,082.85-38,592

Finding the Fourth Proportional to 80,721.86, 121,082.85 and 38,592

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Solution

The fourth proportional to 80,721.86, 121,082.85 and 38,592 is: 57,888.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,721.86 : 121,082.85 = 38,592 : x
  2. Step 2: Convert to fraction form
    80,721.86/121,082.85 = 38,592/x
  3. Step 3: Cross multiply
    80,721.86x = 121,082.85 × 38,592
  4. Step 4: Simplify right side
    80,721.86x = 4,672,829,347.20
  5. Step 5: Solve for x
    x = 4,672,829,347.20/80,721.86
  6. Step 6: Final answer
    x = 57,888.03

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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.