Home / 54,628.08-81,981-42,160.56

Finding the Fourth Proportional to 54,628.08, 81,981 and 42,160.56

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Solution

The fourth proportional to 54,628.08, 81,981 and 42,160.56 is: 63,270.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,628.08 : 81,981 = 42,160.56 : x
  2. Step 2: Convert to fraction form
    54,628.08/81,981 = 42,160.56/x
  3. Step 3: Cross multiply
    54,628.08x = 81,981 × 42,160.56
  4. Step 4: Simplify right side
    54,628.08x = 3,456,364,869.36
  5. Step 5: Solve for x
    x = 3,456,364,869.36/54,628.08
  6. Step 6: Final answer
    x = 63,270.85

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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.