Home / 81,695.05-112,736.92-45,395.56

Finding the Fourth Proportional to 81,695.05, 112,736.92 and 45,395.56

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Solution

The fourth proportional to 81,695.05, 112,736.92 and 45,395.56 is: 62,644.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,695.05 : 112,736.92 = 45,395.56 : x
  2. Step 2: Convert to fraction form
    81,695.05/112,736.92 = 45,395.56/x
  3. Step 3: Cross multiply
    81,695.05x = 112,736.92 × 45,395.56
  4. Step 4: Simplify right side
    81,695.05x = 5,117,755,220.74
  5. Step 5: Solve for x
    x = 5,117,755,220.74/81,695.05
  6. Step 6: Final answer
    x = 62,644.62

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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.