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Finding the Fourth Proportional to 81,263.44, 112,143.66 and 45,454

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Solution

The fourth proportional to 81,263.44, 112,143.66 and 45,454 is: 62,726.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,263.44 : 112,143.66 = 45,454 : x
  2. Step 2: Convert to fraction form
    81,263.44/112,143.66 = 45,454/x
  3. Step 3: Cross multiply
    81,263.44x = 112,143.66 × 45,454
  4. Step 4: Simplify right side
    81,263.44x = 5,097,377,921.64
  5. Step 5: Solve for x
    x = 5,097,377,921.64/81,263.44
  6. Step 6: Final answer
    x = 62,726.58

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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.