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Finding the Fourth Proportional to 60,013.80, 89,965.04 and 20,561.54

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Solution

The fourth proportional to 60,013.80, 89,965.04 and 20,561.54 is: 30,823.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,013.80 : 89,965.04 = 20,561.54 : x
  2. Step 2: Convert to fraction form
    60,013.80/89,965.04 = 20,561.54/x
  3. Step 3: Cross multiply
    60,013.80x = 89,965.04 × 20,561.54
  4. Step 4: Simplify right side
    60,013.80x = 1,849,819,768.56
  5. Step 5: Solve for x
    x = 1,849,819,768.56/60,013.80
  6. Step 6: Final answer
    x = 30,823.24

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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.