Home / 31,976,992.20-44,142,660.18-20,390,130.12

Finding the Fourth Proportional to 31,976,992.20, 44,142,660.18 and 20,390,130.12

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Solution

The fourth proportional to 31,976,992.20, 44,142,660.18 and 20,390,130.12 is: 28,147,568.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,976,992.20 : 44,142,660.18 = 20,390,130.12 : x
  2. Step 2: Convert to fraction form
    31,976,992.20/44,142,660.18 = 20,390,130.12/x
  3. Step 3: Cross multiply
    31,976,992.20x = 44,142,660.18 × 20,390,130.12
  4. Step 4: Simplify right side
    31,976,992.20x = 900,074,584,913,142.62
  5. Step 5: Solve for x
    x = 900,074,584,913,142.62/31,976,992.20
  6. Step 6: Final answer
    x = 28,147,568.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.