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Finding the Fourth Proportional to 83,503.84, 125,258 and 21,179.20

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Solution

The fourth proportional to 83,503.84, 125,258 and 21,179.20 is: 31,769.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,503.84 : 125,258 = 21,179.20 : x
  2. Step 2: Convert to fraction form
    83,503.84/125,258 = 21,179.20/x
  3. Step 3: Cross multiply
    83,503.84x = 125,258 × 21,179.20
  4. Step 4: Simplify right side
    83,503.84x = 2,652,864,233.60
  5. Step 5: Solve for x
    x = 2,652,864,233.60/83,503.84
  6. Step 6: Final answer
    x = 31,769.37

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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.