Home / 83,640.46-115,423.34-45,400.76

Finding the Fourth Proportional to 83,640.46, 115,423.34 and 45,400.76

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Solution

The fourth proportional to 83,640.46, 115,423.34 and 45,400.76 is: 62,652.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,640.46 : 115,423.34 = 45,400.76 : x
  2. Step 2: Convert to fraction form
    83,640.46/115,423.34 = 45,400.76/x
  3. Step 3: Cross multiply
    83,640.46x = 115,423.34 × 45,400.76
  4. Step 4: Simplify right side
    83,640.46x = 5,240,307,357.74
  5. Step 5: Solve for x
    x = 5,240,307,357.74/83,640.46
  6. Step 6: Final answer
    x = 62,652.78

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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.