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Finding the Fourth Proportional to 60,285.87, 90,441.23 and 20,837.79

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Solution

The fourth proportional to 60,285.87, 90,441.23 and 20,837.79 is: 31,260.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,285.87 : 90,441.23 = 20,837.79 : x
  2. Step 2: Convert to fraction form
    60,285.87/90,441.23 = 20,837.79/x
  3. Step 3: Cross multiply
    60,285.87x = 90,441.23 × 20,837.79
  4. Step 4: Simplify right side
    60,285.87x = 1,884,595,253.89
  5. Step 5: Solve for x
    x = 1,884,595,253.89/60,285.87
  6. Step 6: Final answer
    x = 31,260.98

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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.