Home / 72,157.20-99,580.01-40,326.10

Finding the Fourth Proportional to 72,157.20, 99,580.01 and 40,326.10

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Solution

The fourth proportional to 72,157.20, 99,580.01 and 40,326.10 is: 55,651.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,157.20 : 99,580.01 = 40,326.10 : x
  2. Step 2: Convert to fraction form
    72,157.20/99,580.01 = 40,326.10/x
  3. Step 3: Cross multiply
    72,157.20x = 99,580.01 × 40,326.10
  4. Step 4: Simplify right side
    72,157.20x = 4,015,673,293.13
  5. Step 5: Solve for x
    x = 4,015,673,293.13/72,157.20
  6. Step 6: Final answer
    x = 55,651.73

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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.