Home / 80,538.76-111,139.68-44,731

Finding the Fourth Proportional to 80,538.76, 111,139.68 and 44,731

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Solution

The fourth proportional to 80,538.76, 111,139.68 and 44,731 is: 61,726.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,538.76 : 111,139.68 = 44,731 : x
  2. Step 2: Convert to fraction form
    80,538.76/111,139.68 = 44,731/x
  3. Step 3: Cross multiply
    80,538.76x = 111,139.68 × 44,731
  4. Step 4: Simplify right side
    80,538.76x = 4,971,389,026.08
  5. Step 5: Solve for x
    x = 4,971,389,026.08/80,538.76
  6. Step 6: Final answer
    x = 61,726.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.