Home / 78,454.43-108,269.22-42,646.85

Finding the Fourth Proportional to 78,454.43, 108,269.22 and 42,646.85

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Solution

The fourth proportional to 78,454.43, 108,269.22 and 42,646.85 is: 58,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,454.43 : 108,269.22 = 42,646.85 : x
  2. Step 2: Convert to fraction form
    78,454.43/108,269.22 = 42,646.85/x
  3. Step 3: Cross multiply
    78,454.43x = 108,269.22 × 42,646.85
  4. Step 4: Simplify right side
    78,454.43x = 4,617,341,184.96
  5. Step 5: Solve for x
    x = 4,617,341,184.96/78,454.43
  6. Step 6: Final answer
    x = 58,853.80

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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.