Home / 74,872.58-112,309.23-30,499.76

Finding the Fourth Proportional to 74,872.58, 112,309.23 and 30,499.76

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Solution

The fourth proportional to 74,872.58, 112,309.23 and 30,499.76 is: 45,749.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,872.58 : 112,309.23 = 30,499.76 : x
  2. Step 2: Convert to fraction form
    74,872.58/112,309.23 = 30,499.76/x
  3. Step 3: Cross multiply
    74,872.58x = 112,309.23 × 30,499.76
  4. Step 4: Simplify right side
    74,872.58x = 3,425,403,999.24
  5. Step 5: Solve for x
    x = 3,425,403,999.24/74,872.58
  6. Step 6: Final answer
    x = 45,749.78

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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.