Home / 81,401.16-112,332.78-45,591.24

Finding the Fourth Proportional to 81,401.16, 112,332.78 and 45,591.24

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Solution

The fourth proportional to 81,401.16, 112,332.78 and 45,591.24 is: 62,915.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,401.16 : 112,332.78 = 45,591.24 : x
  2. Step 2: Convert to fraction form
    81,401.16/112,332.78 = 45,591.24/x
  3. Step 3: Cross multiply
    81,401.16x = 112,332.78 × 45,591.24
  4. Step 4: Simplify right side
    81,401.16x = 5,121,390,732.85
  5. Step 5: Solve for x
    x = 5,121,390,732.85/81,401.16
  6. Step 6: Final answer
    x = 62,915.45

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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.