Home / 83,538.92-125,030.07-66,820.52

Finding the Fourth Proportional to 83,538.92, 125,030.07 and 66,820.52

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Solution

The fourth proportional to 83,538.92, 125,030.07 and 66,820.52 is: 100,008.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,538.92 : 125,030.07 = 66,820.52 : x
  2. Step 2: Convert to fraction form
    83,538.92/125,030.07 = 66,820.52/x
  3. Step 3: Cross multiply
    83,538.92x = 125,030.07 × 66,820.52
  4. Step 4: Simplify right side
    83,538.92x = 8,354,574,293.04
  5. Step 5: Solve for x
    x = 8,354,574,293.04/83,538.92
  6. Step 6: Final answer
    x = 100,008.17

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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.