Home / 83,639.46-115,418.22-49,649.40

Finding the Fourth Proportional to 83,639.46, 115,418.22 and 49,649.40

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Solution

The fourth proportional to 83,639.46, 115,418.22 and 49,649.40 is: 68,513.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,639.46 : 115,418.22 = 49,649.40 : x
  2. Step 2: Convert to fraction form
    83,639.46/115,418.22 = 49,649.40/x
  3. Step 3: Cross multiply
    83,639.46x = 115,418.22 × 49,649.40
  4. Step 4: Simplify right side
    83,639.46x = 5,730,445,372.07
  5. Step 5: Solve for x
    x = 5,730,445,372.07/83,639.46
  6. Step 6: Final answer
    x = 68,513.66

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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.