Home / 74,538.12-102,865.20-42,713.10

Finding the Fourth Proportional to 74,538.12, 102,865.20 and 42,713.10

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Solution

The fourth proportional to 74,538.12, 102,865.20 and 42,713.10 is: 58,945.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,538.12 : 102,865.20 = 42,713.10 : x
  2. Step 2: Convert to fraction form
    74,538.12/102,865.20 = 42,713.10/x
  3. Step 3: Cross multiply
    74,538.12x = 102,865.20 × 42,713.10
  4. Step 4: Simplify right side
    74,538.12x = 4,393,691,574.12
  5. Step 5: Solve for x
    x = 4,393,691,574.12/74,538.12
  6. Step 6: Final answer
    x = 58,945.56

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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.