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Finding the Fourth Proportional to 81,571.05, 112,569.14 and 45,758.93

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Solution

The fourth proportional to 81,571.05, 112,569.14 and 45,758.93 is: 63,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,571.05 : 112,569.14 = 45,758.93 : x
  2. Step 2: Convert to fraction form
    81,571.05/112,569.14 = 45,758.93/x
  3. Step 3: Cross multiply
    81,571.05x = 112,569.14 × 45,758.93
  4. Step 4: Simplify right side
    81,571.05x = 5,151,042,948.97
  5. Step 5: Solve for x
    x = 5,151,042,948.97/81,571.05
  6. Step 6: Final answer
    x = 63,147.93

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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.