Home / 83,972.18-115,881.71-45,731.79

Finding the Fourth Proportional to 83,972.18, 115,881.71 and 45,731.79

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Solution

The fourth proportional to 83,972.18, 115,881.71 and 45,731.79 is: 63,109.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,972.18 : 115,881.71 = 45,731.79 : x
  2. Step 2: Convert to fraction form
    83,972.18/115,881.71 = 45,731.79/x
  3. Step 3: Cross multiply
    83,972.18x = 115,881.71 × 45,731.79
  4. Step 4: Simplify right side
    83,972.18x = 5,299,477,797.90
  5. Step 5: Solve for x
    x = 5,299,477,797.90/83,972.18
  6. Step 6: Final answer
    x = 63,109.92

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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.