Home / 79,162.12-118,758.12-31,780.92

Finding the Fourth Proportional to 79,162.12, 118,758.12 and 31,780.92

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Solution

The fourth proportional to 79,162.12, 118,758.12 and 31,780.92 is: 47,677.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,162.12 : 118,758.12 = 31,780.92 : x
  2. Step 2: Convert to fraction form
    79,162.12/118,758.12 = 31,780.92/x
  3. Step 3: Cross multiply
    79,162.12x = 118,758.12 × 31,780.92
  4. Step 4: Simplify right side
    79,162.12x = 3,774,242,311.07
  5. Step 5: Solve for x
    x = 3,774,242,311.07/79,162.12
  6. Step 6: Final answer
    x = 47,677.38

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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.