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Finding the Fourth Proportional to 81,602.76, 122,410.08 and 34,170.24

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Solution

The fourth proportional to 81,602.76, 122,410.08 and 34,170.24 is: 51,257.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,602.76 : 122,410.08 = 34,170.24 : x
  2. Step 2: Convert to fraction form
    81,602.76/122,410.08 = 34,170.24/x
  3. Step 3: Cross multiply
    81,602.76x = 122,410.08 × 34,170.24
  4. Step 4: Simplify right side
    81,602.76x = 4,182,781,812.02
  5. Step 5: Solve for x
    x = 4,182,781,812.02/81,602.76
  6. Step 6: Final answer
    x = 51,257.85

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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.