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Finding the Fourth Proportional to 81,644.76, 112,666.14 and 45,834.12

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Solution

The fourth proportional to 81,644.76, 112,666.14 and 45,834.12 is: 63,249.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,644.76 : 112,666.14 = 45,834.12 : x
  2. Step 2: Convert to fraction form
    81,644.76/112,666.14 = 45,834.12/x
  3. Step 3: Cross multiply
    81,644.76x = 112,666.14 × 45,834.12
  4. Step 4: Simplify right side
    81,644.76x = 5,163,953,380.70
  5. Step 5: Solve for x
    x = 5,163,953,380.70/81,644.76
  6. Step 6: Final answer
    x = 63,249.05

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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.