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Finding the Fourth Proportional to 60,281.89, 90,422.83 and 20,817.47

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Solution

The fourth proportional to 60,281.89, 90,422.83 and 20,817.47 is: 31,226.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,281.89 : 90,422.83 = 20,817.47 : x
  2. Step 2: Convert to fraction form
    60,281.89/90,422.83 = 20,817.47/x
  3. Step 3: Cross multiply
    60,281.89x = 90,422.83 × 20,817.47
  4. Step 4: Simplify right side
    60,281.89x = 1,882,374,550.84
  5. Step 5: Solve for x
    x = 1,882,374,550.84/60,281.89
  6. Step 6: Final answer
    x = 31,226.20

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1.5x scale

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.