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Finding the Fourth Proportional to 60,331.80, 90,324.90 and 53,419.80

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Solution

The fourth proportional to 60,331.80, 90,324.90 and 53,419.80 is: 79,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,331.80 : 90,324.90 = 53,419.80 : x
  2. Step 2: Convert to fraction form
    60,331.80/90,324.90 = 53,419.80/x
  3. Step 3: Cross multiply
    60,331.80x = 90,324.90 × 53,419.80
  4. Step 4: Simplify right side
    60,331.80x = 4,825,138,093.02
  5. Step 5: Solve for x
    x = 4,825,138,093.02/60,331.80
  6. Step 6: Final answer
    x = 79,976.70

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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.