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Finding the Fourth Proportional to 84,233.70, 126,350.55 and 21,904.20

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Solution

The fourth proportional to 84,233.70, 126,350.55 and 21,904.20 is: 32,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,233.70 : 126,350.55 = 21,904.20 : x
  2. Step 2: Convert to fraction form
    84,233.70/126,350.55 = 21,904.20/x
  3. Step 3: Cross multiply
    84,233.70x = 126,350.55 × 21,904.20
  4. Step 4: Simplify right side
    84,233.70x = 2,767,607,717.31
  5. Step 5: Solve for x
    x = 2,767,607,717.31/84,233.70
  6. Step 6: Final answer
    x = 32,856.30

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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.