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Finding the Fourth Proportional to 83,211.76, 124,817.62 and 27,807.76

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Solution

The fourth proportional to 83,211.76, 124,817.62 and 27,807.76 is: 41,711.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,211.76 : 124,817.62 = 27,807.76 : x
  2. Step 2: Convert to fraction form
    83,211.76/124,817.62 = 27,807.76/x
  3. Step 3: Cross multiply
    83,211.76x = 124,817.62 × 27,807.76
  4. Step 4: Simplify right side
    83,211.76x = 3,470,898,420.73
  5. Step 5: Solve for x
    x = 3,470,898,420.73/83,211.76
  6. Step 6: Final answer
    x = 41,711.63

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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.