Home / 72,157.80-99,577.92-40,326.71

Finding the Fourth Proportional to 72,157.80, 99,577.92 and 40,326.71

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Solution

The fourth proportional to 72,157.80, 99,577.92 and 40,326.71 is: 55,650.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,157.80 : 99,577.92 = 40,326.71 : x
  2. Step 2: Convert to fraction form
    72,157.80/99,577.92 = 40,326.71/x
  3. Step 3: Cross multiply
    72,157.80x = 99,577.92 × 40,326.71
  4. Step 4: Simplify right side
    72,157.80x = 4,015,649,555.58
  5. Step 5: Solve for x
    x = 4,015,649,555.58/72,157.80
  6. Step 6: Final answer
    x = 55,650.94

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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.