Home / 42,790.56-64,179.20-15,082.08

Finding the Fourth Proportional to 42,790.56, 64,179.20 and 15,082.08

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Solution

The fourth proportional to 42,790.56, 64,179.20 and 15,082.08 is: 22,620.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,790.56 : 64,179.20 = 15,082.08 : x
  2. Step 2: Convert to fraction form
    42,790.56/64,179.20 = 15,082.08/x
  3. Step 3: Cross multiply
    42,790.56x = 64,179.20 × 15,082.08
  4. Step 4: Simplify right side
    42,790.56x = 967,955,828.74
  5. Step 5: Solve for x
    x = 967,955,828.74/42,790.56
  6. Step 6: Final answer
    x = 22,620.78

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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.