Home / 83,445.18-115,149.51-45,712.86

Finding the Fourth Proportional to 83,445.18, 115,149.51 and 45,712.86

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Solution

The fourth proportional to 83,445.18, 115,149.51 and 45,712.86 is: 63,081.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,445.18 : 115,149.51 = 45,712.86 : x
  2. Step 2: Convert to fraction form
    83,445.18/115,149.51 = 45,712.86/x
  3. Step 3: Cross multiply
    83,445.18x = 115,149.51 × 45,712.86
  4. Step 4: Simplify right side
    83,445.18x = 5,263,813,429.70
  5. Step 5: Solve for x
    x = 5,263,813,429.70/83,445.18
  6. Step 6: Final answer
    x = 63,081.10

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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.