Home / 81,330.13-112,238.12-45,520.07

Finding the Fourth Proportional to 81,330.13, 112,238.12 and 45,520.07

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Solution

The fourth proportional to 81,330.13, 112,238.12 and 45,520.07 is: 62,819.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,330.13 : 112,238.12 = 45,520.07 : x
  2. Step 2: Convert to fraction form
    81,330.13/112,238.12 = 45,520.07/x
  3. Step 3: Cross multiply
    81,330.13x = 112,238.12 × 45,520.07
  4. Step 4: Simplify right side
    81,330.13x = 5,109,086,851.47
  5. Step 5: Solve for x
    x = 5,109,086,851.47/81,330.13
  6. Step 6: Final answer
    x = 62,819.12

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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.