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Finding the Fourth Proportional to 81,737.11, 122,602.33 and 28,441.29

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Solution

The fourth proportional to 81,737.11, 122,602.33 and 28,441.29 is: 42,660.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,737.11 : 122,602.33 = 28,441.29 : x
  2. Step 2: Convert to fraction form
    81,737.11/122,602.33 = 28,441.29/x
  3. Step 3: Cross multiply
    81,737.11x = 122,602.33 × 28,441.29
  4. Step 4: Simplify right side
    81,737.11x = 3,486,968,422.21
  5. Step 5: Solve for x
    x = 3,486,968,422.21/81,737.11
  6. Step 6: Final answer
    x = 42,660.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.