Home / 78,814.80-108,765.99-43,005.78

Finding the Fourth Proportional to 78,814.80, 108,765.99 and 43,005.78

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Solution

The fourth proportional to 78,814.80, 108,765.99 and 43,005.78 is: 59,348.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,814.80 : 108,765.99 = 43,005.78 : x
  2. Step 2: Convert to fraction form
    78,814.80/108,765.99 = 43,005.78/x
  3. Step 3: Cross multiply
    78,814.80x = 108,765.99 × 43,005.78
  4. Step 4: Simplify right side
    78,814.80x = 4,677,566,237.42
  5. Step 5: Solve for x
    x = 4,677,566,237.42/78,814.80
  6. Step 6: Final answer
    x = 59,348.83

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1.5x scale

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.