Home / 83,121.10-124,681.65-57,751.90

Finding the Fourth Proportional to 83,121.10, 124,681.65 and 57,751.90

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Solution

The fourth proportional to 83,121.10, 124,681.65 and 57,751.90 is: 86,627.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,121.10 : 124,681.65 = 57,751.90 : x
  2. Step 2: Convert to fraction form
    83,121.10/124,681.65 = 57,751.90/x
  3. Step 3: Cross multiply
    83,121.10x = 124,681.65 × 57,751.90
  4. Step 4: Simplify right side
    83,121.10x = 7,200,602,182.64
  5. Step 5: Solve for x
    x = 7,200,602,182.64/83,121.10
  6. Step 6: Final answer
    x = 86,627.85

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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.