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Finding the Fourth Proportional to 80,155.71, 120,326.72 and 46,899.63

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Solution

The fourth proportional to 80,155.71, 120,326.72 and 46,899.63 is: 70,403.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,155.71 : 120,326.72 = 46,899.63 : x
  2. Step 2: Convert to fraction form
    80,155.71/120,326.72 = 46,899.63/x
  3. Step 3: Cross multiply
    80,155.71x = 120,326.72 × 46,899.63
  4. Step 4: Simplify right side
    80,155.71x = 5,643,278,412.62
  5. Step 5: Solve for x
    x = 5,643,278,412.62/80,155.71
  6. Step 6: Final answer
    x = 70,403.95

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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.