Home / 83,720.36-115,447.20-58,255.58

Finding the Fourth Proportional to 83,720.36, 115,447.20 and 58,255.58

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Solution

The fourth proportional to 83,720.36, 115,447.20 and 58,255.58 is: 80,332.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,720.36 : 115,447.20 = 58,255.58 : x
  2. Step 2: Convert to fraction form
    83,720.36/115,447.20 = 58,255.58/x
  3. Step 3: Cross multiply
    83,720.36x = 115,447.20 × 58,255.58
  4. Step 4: Simplify right side
    83,720.36x = 6,725,443,595.38
  5. Step 5: Solve for x
    x = 6,725,443,595.38/83,720.36
  6. Step 6: Final answer
    x = 80,332.23

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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.