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Finding the Fourth Proportional to 91,775.20, 137,630.40 and 32,612.80

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Solution

The fourth proportional to 91,775.20, 137,630.40 and 32,612.80 is: 48,907.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,775.20 : 137,630.40 = 32,612.80 : x
  2. Step 2: Convert to fraction form
    91,775.20/137,630.40 = 32,612.80/x
  3. Step 3: Cross multiply
    91,775.20x = 137,630.40 × 32,612.80
  4. Step 4: Simplify right side
    91,775.20x = 4,488,512,709.12
  5. Step 5: Solve for x
    x = 4,488,512,709.12/91,775.20
  6. Step 6: Final answer
    x = 48,907.69

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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.