Home / 40,089.76-60,118.64-12,380.32

Finding the Fourth Proportional to 40,089.76, 60,118.64 and 12,380.32

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Solution

The fourth proportional to 40,089.76, 60,118.64 and 12,380.32 is: 18,565.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,089.76 : 60,118.64 = 12,380.32 : x
  2. Step 2: Convert to fraction form
    40,089.76/60,118.64 = 12,380.32/x
  3. Step 3: Cross multiply
    40,089.76x = 60,118.64 × 12,380.32
  4. Step 4: Simplify right side
    40,089.76x = 744,288,001.16
  5. Step 5: Solve for x
    x = 744,288,001.16/40,089.76
  6. Step 6: Final answer
    x = 18,565.54

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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.