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Finding the Fourth Proportional to 60,253.74, 90,422.34 and 20,811.18

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Solution

The fourth proportional to 60,253.74, 90,422.34 and 20,811.18 is: 31,231.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,253.74 : 90,422.34 = 20,811.18 : x
  2. Step 2: Convert to fraction form
    60,253.74/90,422.34 = 20,811.18/x
  3. Step 3: Cross multiply
    60,253.74x = 90,422.34 × 20,811.18
  4. Step 4: Simplify right side
    60,253.74x = 1,881,795,593.76
  5. Step 5: Solve for x
    x = 1,881,795,593.76/60,253.74
  6. Step 6: Final answer
    x = 31,231.18

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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.