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Finding the Fourth Proportional to 79,854.30, 119,680.65 and 40,422.30

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Solution

The fourth proportional to 79,854.30, 119,680.65 and 40,422.30 is: 60,582.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,854.30 : 119,680.65 = 40,422.30 : x
  2. Step 2: Convert to fraction form
    79,854.30/119,680.65 = 40,422.30/x
  3. Step 3: Cross multiply
    79,854.30x = 119,680.65 × 40,422.30
  4. Step 4: Simplify right side
    79,854.30x = 4,837,767,138.50
  5. Step 5: Solve for x
    x = 4,837,767,138.50/79,854.30
  6. Step 6: Final answer
    x = 60,582.42

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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.