Home / 81,493.20-112,458.45-45,685.53

Finding the Fourth Proportional to 81,493.20, 112,458.45 and 45,685.53

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Solution

The fourth proportional to 81,493.20, 112,458.45 and 45,685.53 is: 63,044.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,493.20 : 112,458.45 = 45,685.53 : x
  2. Step 2: Convert to fraction form
    81,493.20/112,458.45 = 45,685.53/x
  3. Step 3: Cross multiply
    81,493.20x = 112,458.45 × 45,685.53
  4. Step 4: Simplify right side
    81,493.20x = 5,137,723,891.23
  5. Step 5: Solve for x
    x = 5,137,723,891.23/81,493.20
  6. Step 6: Final answer
    x = 63,044.82

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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.