Home / 75,707.55-113,526.72-28,287.87

Finding the Fourth Proportional to 75,707.55, 113,526.72 and 28,287.87

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Solution

The fourth proportional to 75,707.55, 113,526.72 and 28,287.87 is: 42,418.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,707.55 : 113,526.72 = 28,287.87 : x
  2. Step 2: Convert to fraction form
    75,707.55/113,526.72 = 28,287.87/x
  3. Step 3: Cross multiply
    75,707.55x = 113,526.72 × 28,287.87
  4. Step 4: Simplify right side
    75,707.55x = 3,211,428,777.24
  5. Step 5: Solve for x
    x = 3,211,428,777.24/75,707.55
  6. Step 6: Final answer
    x = 42,418.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.