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Finding the Fourth Proportional to 60,685.89, 91,041.84 and 21,244.29

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Solution

The fourth proportional to 60,685.89, 91,041.84 and 21,244.29 is: 31,870.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,685.89 : 91,041.84 = 21,244.29 : x
  2. Step 2: Convert to fraction form
    60,685.89/91,041.84 = 21,244.29/x
  3. Step 3: Cross multiply
    60,685.89x = 91,041.84 × 21,244.29
  4. Step 4: Simplify right side
    60,685.89x = 1,934,119,251.09
  5. Step 5: Solve for x
    x = 1,934,119,251.09/60,685.89
  6. Step 6: Final answer
    x = 31,870.99

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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.