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Finding the Fourth Proportional to 79,216.40, 118,842.60 and 26,631.20

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Solution

The fourth proportional to 79,216.40, 118,842.60 and 26,631.20 is: 39,952.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,216.40 : 118,842.60 = 26,631.20 : x
  2. Step 2: Convert to fraction form
    79,216.40/118,842.60 = 26,631.20/x
  3. Step 3: Cross multiply
    79,216.40x = 118,842.60 × 26,631.20
  4. Step 4: Simplify right side
    79,216.40x = 3,164,921,049.12
  5. Step 5: Solve for x
    x = 3,164,921,049.12/79,216.40
  6. Step 6: Final answer
    x = 39,952.85

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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.