Home / 81,254.45-112,141.71-45,451.88

Finding the Fourth Proportional to 81,254.45, 112,141.71 and 45,451.88

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Solution

The fourth proportional to 81,254.45, 112,141.71 and 45,451.88 is: 62,729.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,254.45 : 112,141.71 = 45,451.88 : x
  2. Step 2: Convert to fraction form
    81,254.45/112,141.71 = 45,451.88/x
  3. Step 3: Cross multiply
    81,254.45x = 112,141.71 × 45,451.88
  4. Step 4: Simplify right side
    81,254.45x = 5,097,051,318.66
  5. Step 5: Solve for x
    x = 5,097,051,318.66/81,254.45
  6. Step 6: Final answer
    x = 62,729.51

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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.