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Finding the Fourth Proportional to 81,571.19, 112,567.97 and 45,278.12

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Solution

The fourth proportional to 81,571.19, 112,567.97 and 45,278.12 is: 62,483.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,571.19 : 112,567.97 = 45,278.12 : x
  2. Step 2: Convert to fraction form
    81,571.19/112,567.97 = 45,278.12/x
  3. Step 3: Cross multiply
    81,571.19x = 112,567.97 × 45,278.12
  4. Step 4: Simplify right side
    81,571.19x = 5,096,865,264.59
  5. Step 5: Solve for x
    x = 5,096,865,264.59/81,571.19
  6. Step 6: Final answer
    x = 62,483.65

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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.