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Finding the Fourth Proportional to 92,951.20, 139,426.80 and 57,910.60

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Solution

The fourth proportional to 92,951.20, 139,426.80 and 57,910.60 is: 86,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,951.20 : 139,426.80 = 57,910.60 : x
  2. Step 2: Convert to fraction form
    92,951.20/139,426.80 = 57,910.60/x
  3. Step 3: Cross multiply
    92,951.20x = 139,426.80 × 57,910.60
  4. Step 4: Simplify right side
    92,951.20x = 8,074,289,644.08
  5. Step 5: Solve for x
    x = 8,074,289,644.08/92,951.20
  6. Step 6: Final answer
    x = 86,865.90

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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.