Home / 66,447.28-99,653.92-19,689.24

Finding the Fourth Proportional to 66,447.28, 99,653.92 and 19,689.24

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Solution

The fourth proportional to 66,447.28, 99,653.92 and 19,689.24 is: 29,528.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,447.28 : 99,653.92 = 19,689.24 : x
  2. Step 2: Convert to fraction form
    66,447.28/99,653.92 = 19,689.24/x
  3. Step 3: Cross multiply
    66,447.28x = 99,653.92 × 19,689.24
  4. Step 4: Simplify right side
    66,447.28x = 1,962,109,947.82
  5. Step 5: Solve for x
    x = 1,962,109,947.82/66,447.28
  6. Step 6: Final answer
    x = 29,528.82

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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.