Home / 83,701.12-115,513.20-45,975.76

Finding the Fourth Proportional to 83,701.12, 115,513.20 and 45,975.76

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Solution

The fourth proportional to 83,701.12, 115,513.20 and 45,975.76 is: 63,449.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,701.12 : 115,513.20 = 45,975.76 : x
  2. Step 2: Convert to fraction form
    83,701.12/115,513.20 = 45,975.76/x
  3. Step 3: Cross multiply
    83,701.12x = 115,513.20 × 45,975.76
  4. Step 4: Simplify right side
    83,701.12x = 5,310,807,160.03
  5. Step 5: Solve for x
    x = 5,310,807,160.03/83,701.12
  6. Step 6: Final answer
    x = 63,449.65

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Double scale
Find fourth proportional to 83,702.12, 115,514.58 and 45,976.76
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1.5x scale

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.