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Finding the Fourth Proportional to 60,432.96, 90,649.44 and 18,879.96

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Solution

The fourth proportional to 60,432.96, 90,649.44 and 18,879.96 is: 28,319.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,432.96 : 90,649.44 = 18,879.96 : x
  2. Step 2: Convert to fraction form
    60,432.96/90,649.44 = 18,879.96/x
  3. Step 3: Cross multiply
    60,432.96x = 90,649.44 × 18,879.96
  4. Step 4: Simplify right side
    60,432.96x = 1,711,457,912.76
  5. Step 5: Solve for x
    x = 1,711,457,912.76/60,432.96
  6. Step 6: Final answer
    x = 28,319.94

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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.