Home / 75,723.12-104,301-57,643.92

Finding the Fourth Proportional to 75,723.12, 104,301 and 57,643.92

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Solution

The fourth proportional to 75,723.12, 104,301 and 57,643.92 is: 79,398.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,723.12 : 104,301 = 57,643.92 : x
  2. Step 2: Convert to fraction form
    75,723.12/104,301 = 57,643.92/x
  3. Step 3: Cross multiply
    75,723.12x = 104,301 × 57,643.92
  4. Step 4: Simplify right side
    75,723.12x = 6,012,318,499.92
  5. Step 5: Solve for x
    x = 6,012,318,499.92/75,723.12
  6. Step 6: Final answer
    x = 79,398.72

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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.