Home / 89,432.20-123,417.88-51,191.60

Finding the Fourth Proportional to 89,432.20, 123,417.88 and 51,191.60

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Solution

The fourth proportional to 89,432.20, 123,417.88 and 51,191.60 is: 70,645.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,432.20 : 123,417.88 = 51,191.60 : x
  2. Step 2: Convert to fraction form
    89,432.20/123,417.88 = 51,191.60/x
  3. Step 3: Cross multiply
    89,432.20x = 123,417.88 × 51,191.60
  4. Step 4: Simplify right side
    89,432.20x = 6,317,958,000.74
  5. Step 5: Solve for x
    x = 6,317,958,000.74/89,432.20
  6. Step 6: Final answer
    x = 70,645.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.