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Finding the Fourth Proportional to 81,600.84, 112,608.90 and 45,791.01

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Solution

The fourth proportional to 81,600.84, 112,608.90 and 45,791.01 is: 63,191.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,600.84 : 112,608.90 = 45,791.01 : x
  2. Step 2: Convert to fraction form
    81,600.84/112,608.90 = 45,791.01/x
  3. Step 3: Cross multiply
    81,600.84x = 112,608.90 × 45,791.01
  4. Step 4: Simplify right side
    81,600.84x = 5,156,475,265.99
  5. Step 5: Solve for x
    x = 5,156,475,265.99/81,600.84
  6. Step 6: Final answer
    x = 63,191.45

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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.