Home / 81,717.20-112,767.12-45,418.46

Finding the Fourth Proportional to 81,717.20, 112,767.12 and 45,418.46

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Solution

The fourth proportional to 81,717.20, 112,767.12 and 45,418.46 is: 62,676.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,717.20 : 112,767.12 = 45,418.46 : x
  2. Step 2: Convert to fraction form
    81,717.20/112,767.12 = 45,418.46/x
  3. Step 3: Cross multiply
    81,717.20x = 112,767.12 × 45,418.46
  4. Step 4: Simplify right side
    81,717.20x = 5,121,709,210.95
  5. Step 5: Solve for x
    x = 5,121,709,210.95/81,717.20
  6. Step 6: Final answer
    x = 62,676.03

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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.