Home / 75,768.45-113,507.19-42,387.36

Finding the Fourth Proportional to 75,768.45, 113,507.19 and 42,387.36

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Solution

The fourth proportional to 75,768.45, 113,507.19 and 42,387.36 is: 63,499.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,768.45 : 113,507.19 = 42,387.36 : x
  2. Step 2: Convert to fraction form
    75,768.45/113,507.19 = 42,387.36/x
  3. Step 3: Cross multiply
    75,768.45x = 113,507.19 × 42,387.36
  4. Step 4: Simplify right side
    75,768.45x = 4,811,270,125.12
  5. Step 5: Solve for x
    x = 4,811,270,125.12/75,768.45
  6. Step 6: Final answer
    x = 63,499.65

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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.