Home / 60,221.20-90,331.80-18,672.40

Finding the Fourth Proportional to 60,221.20, 90,331.80 and 18,672.40

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Solution

The fourth proportional to 60,221.20, 90,331.80 and 18,672.40 is: 28,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,221.20 : 90,331.80 = 18,672.40 : x
  2. Step 2: Convert to fraction form
    60,221.20/90,331.80 = 18,672.40/x
  3. Step 3: Cross multiply
    60,221.20x = 90,331.80 × 18,672.40
  4. Step 4: Simplify right side
    60,221.20x = 1,686,711,502.32
  5. Step 5: Solve for x
    x = 1,686,711,502.32/60,221.20
  6. Step 6: Final answer
    x = 28,008.60

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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.