Home / 80,423.24-120,511.82-42,988.62

Finding the Fourth Proportional to 80,423.24, 120,511.82 and 42,988.62

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Solution

The fourth proportional to 80,423.24, 120,511.82 and 42,988.62 is: 64,417.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,423.24 : 120,511.82 = 42,988.62 : x
  2. Step 2: Convert to fraction form
    80,423.24/120,511.82 = 42,988.62/x
  3. Step 3: Cross multiply
    80,423.24x = 120,511.82 × 42,988.62
  4. Step 4: Simplify right side
    80,423.24x = 5,180,636,620.55
  5. Step 5: Solve for x
    x = 5,180,636,620.55/80,423.24
  6. Step 6: Final answer
    x = 64,417.16

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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.