Home / 83,053.76-124,580-20,723.84

Finding the Fourth Proportional to 83,053.76, 124,580 and 20,723.84

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Solution

The fourth proportional to 83,053.76, 124,580 and 20,723.84 is: 31,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,053.76 : 124,580 = 20,723.84 : x
  2. Step 2: Convert to fraction form
    83,053.76/124,580 = 20,723.84/x
  3. Step 3: Cross multiply
    83,053.76x = 124,580 × 20,723.84
  4. Step 4: Simplify right side
    83,053.76x = 2,581,775,987.20
  5. Step 5: Solve for x
    x = 2,581,775,987.20/83,053.76
  6. Step 6: Final answer
    x = 31,085.60

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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.