Home / 72,167.75-99,589.77-40,339.61

Finding the Fourth Proportional to 72,167.75, 99,589.77 and 40,339.61

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Solution

The fourth proportional to 72,167.75, 99,589.77 and 40,339.61 is: 55,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,167.75 : 99,589.77 = 40,339.61 : x
  2. Step 2: Convert to fraction form
    72,167.75/99,589.77 = 40,339.61/x
  3. Step 3: Cross multiply
    72,167.75x = 99,589.77 × 40,339.61
  4. Step 4: Simplify right side
    72,167.75x = 4,017,412,481.79
  5. Step 5: Solve for x
    x = 4,017,412,481.79/72,167.75
  6. Step 6: Final answer
    x = 55,667.70

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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.