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Finding the Fourth Proportional to 83,321.40, 124,981.49 and 33,400.77

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Solution

The fourth proportional to 83,321.40, 124,981.49 and 33,400.77 is: 50,100.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,321.40 : 124,981.49 = 33,400.77 : x
  2. Step 2: Convert to fraction form
    83,321.40/124,981.49 = 33,400.77/x
  3. Step 3: Cross multiply
    83,321.40x = 124,981.49 × 33,400.77
  4. Step 4: Simplify right side
    83,321.40x = 4,174,478,001.75
  5. Step 5: Solve for x
    x = 4,174,478,001.75/83,321.40
  6. Step 6: Final answer
    x = 50,100.91

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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.