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Finding the Fourth Proportional to 79,397.57, 119,005.75 and 31,982.30

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Solution

The fourth proportional to 79,397.57, 119,005.75 and 31,982.30 is: 47,936.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,397.57 : 119,005.75 = 31,982.30 : x
  2. Step 2: Convert to fraction form
    79,397.57/119,005.75 = 31,982.30/x
  3. Step 3: Cross multiply
    79,397.57x = 119,005.75 × 31,982.30
  4. Step 4: Simplify right side
    79,397.57x = 3,806,077,598.23
  5. Step 5: Solve for x
    x = 3,806,077,598.23/79,397.57
  6. Step 6: Final answer
    x = 47,936.95

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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.