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Finding the Fourth Proportional to 75,325.78, 113,034.80 and 30,338.88

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Solution

The fourth proportional to 75,325.78, 113,034.80 and 30,338.88 is: 45,526.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,325.78 : 113,034.80 = 30,338.88 : x
  2. Step 2: Convert to fraction form
    75,325.78/113,034.80 = 30,338.88/x
  3. Step 3: Cross multiply
    75,325.78x = 113,034.80 × 30,338.88
  4. Step 4: Simplify right side
    75,325.78x = 3,429,349,233.02
  5. Step 5: Solve for x
    x = 3,429,349,233.02/75,325.78
  6. Step 6: Final answer
    x = 45,526.90

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1.5x scale

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.