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Finding the Fourth Proportional to 60,602.14, 90,920.49 and 20,629.90

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Solution

The fourth proportional to 60,602.14, 90,920.49 and 20,629.90 is: 30,950.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,602.14 : 90,920.49 = 20,629.90 : x
  2. Step 2: Convert to fraction form
    60,602.14/90,920.49 = 20,629.90/x
  3. Step 3: Cross multiply
    60,602.14x = 90,920.49 × 20,629.90
  4. Step 4: Simplify right side
    60,602.14x = 1,875,680,616.65
  5. Step 5: Solve for x
    x = 1,875,680,616.65/60,602.14
  6. Step 6: Final answer
    x = 30,950.73

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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.