Home / 40,070.72-60,105.38-11,990.86

Finding the Fourth Proportional to 40,070.72, 60,105.38 and 11,990.86

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Solution

The fourth proportional to 40,070.72, 60,105.38 and 11,990.86 is: 17,986.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,070.72 : 60,105.38 = 11,990.86 : x
  2. Step 2: Convert to fraction form
    40,070.72/60,105.38 = 11,990.86/x
  3. Step 3: Cross multiply
    40,070.72x = 60,105.38 × 11,990.86
  4. Step 4: Simplify right side
    40,070.72x = 720,714,986.61
  5. Step 5: Solve for x
    x = 720,714,986.61/40,070.72
  6. Step 6: Final answer
    x = 17,986.07

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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.