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Finding the Fourth Proportional to 80,890.80, 121,314.60 and 24,730.80

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Solution

The fourth proportional to 80,890.80, 121,314.60 and 24,730.80 is: 37,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,890.80 : 121,314.60 = 24,730.80 : x
  2. Step 2: Convert to fraction form
    80,890.80/121,314.60 = 24,730.80/x
  3. Step 3: Cross multiply
    80,890.80x = 121,314.60 × 24,730.80
  4. Step 4: Simplify right side
    80,890.80x = 3,000,207,109.68
  5. Step 5: Solve for x
    x = 3,000,207,109.68/80,890.80
  6. Step 6: Final answer
    x = 37,089.60

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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.