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Finding the Fourth Proportional to 79,715.60, 119,530.20 and 32,915.60

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Solution

The fourth proportional to 79,715.60, 119,530.20 and 32,915.60 is: 49,355.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,715.60 : 119,530.20 = 32,915.60 : x
  2. Step 2: Convert to fraction form
    79,715.60/119,530.20 = 32,915.60/x
  3. Step 3: Cross multiply
    79,715.60x = 119,530.20 × 32,915.60
  4. Step 4: Simplify right side
    79,715.60x = 3,934,408,251.12
  5. Step 5: Solve for x
    x = 3,934,408,251.12/79,715.60
  6. Step 6: Final answer
    x = 49,355.56

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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.