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Finding the Fourth Proportional to 60,571, 90,856.90 and 21,127.96

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Solution

The fourth proportional to 60,571, 90,856.90 and 21,127.96 is: 31,692.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,571 : 90,856.90 = 21,127.96 : x
  2. Step 2: Convert to fraction form
    60,571/90,856.90 = 21,127.96/x
  3. Step 3: Cross multiply
    60,571x = 90,856.90 × 21,127.96
  4. Step 4: Simplify right side
    60,571x = 1,919,620,948.92
  5. Step 5: Solve for x
    x = 1,919,620,948.92/60,571
  6. Step 6: Final answer
    x = 31,692.08

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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.