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Finding the Fourth Proportional to 80,598.90, 120,869.55 and 36,246.90

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Solution

The fourth proportional to 80,598.90, 120,869.55 and 36,246.90 is: 54,357.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,598.90 : 120,869.55 = 36,246.90 : x
  2. Step 2: Convert to fraction form
    80,598.90/120,869.55 = 36,246.90/x
  3. Step 3: Cross multiply
    80,598.90x = 120,869.55 × 36,246.90
  4. Step 4: Simplify right side
    80,598.90x = 4,381,146,491.90
  5. Step 5: Solve for x
    x = 4,381,146,491.90/80,598.90
  6. Step 6: Final answer
    x = 54,357.40

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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.