Home / 72,158.12-99,578.36-40,327.02

Finding the Fourth Proportional to 72,158.12, 99,578.36 and 40,327.02

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Solution

The fourth proportional to 72,158.12, 99,578.36 and 40,327.02 is: 55,651.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,158.12 : 99,578.36 = 40,327.02 : x
  2. Step 2: Convert to fraction form
    72,158.12/99,578.36 = 40,327.02/x
  3. Step 3: Cross multiply
    72,158.12x = 99,578.36 × 40,327.02
  4. Step 4: Simplify right side
    72,158.12x = 4,015,698,313.65
  5. Step 5: Solve for x
    x = 4,015,698,313.65/72,158.12
  6. Step 6: Final answer
    x = 55,651.37

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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.