Home / 81,618.74-112,634.25-45,320.66

Finding the Fourth Proportional to 81,618.74, 112,634.25 and 45,320.66

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Solution

The fourth proportional to 81,618.74, 112,634.25 and 45,320.66 is: 62,542.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,618.74 : 112,634.25 = 45,320.66 : x
  2. Step 2: Convert to fraction form
    81,618.74/112,634.25 = 45,320.66/x
  3. Step 3: Cross multiply
    81,618.74x = 112,634.25 × 45,320.66
  4. Step 4: Simplify right side
    81,618.74x = 5,104,658,871.43
  5. Step 5: Solve for x
    x = 5,104,658,871.43/81,618.74
  6. Step 6: Final answer
    x = 62,542.73

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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.