Home / 83,513.28-125,191.52-28,070.40

Finding the Fourth Proportional to 83,513.28, 125,191.52 and 28,070.40

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Solution

The fourth proportional to 83,513.28, 125,191.52 and 28,070.40 is: 42,079.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,513.28 : 125,191.52 = 28,070.40 : x
  2. Step 2: Convert to fraction form
    83,513.28/125,191.52 = 28,070.40/x
  3. Step 3: Cross multiply
    83,513.28x = 125,191.52 × 28,070.40
  4. Step 4: Simplify right side
    83,513.28x = 3,514,176,043.01
  5. Step 5: Solve for x
    x = 3,514,176,043.01/83,513.28
  6. Step 6: Final answer
    x = 42,079.25

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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.