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Finding the Fourth Proportional to 60,851.89, 91,285.52 and 20,860.03

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Solution

The fourth proportional to 60,851.89, 91,285.52 and 20,860.03 is: 31,292.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,851.89 : 91,285.52 = 20,860.03 : x
  2. Step 2: Convert to fraction form
    60,851.89/91,285.52 = 20,860.03/x
  3. Step 3: Cross multiply
    60,851.89x = 91,285.52 × 20,860.03
  4. Step 4: Simplify right side
    60,851.89x = 1,904,218,695.57
  5. Step 5: Solve for x
    x = 1,904,218,695.57/60,851.89
  6. Step 6: Final answer
    x = 31,292.68

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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.