Home / 51,429.40-77,155.38-21,872.52

Finding the Fourth Proportional to 51,429.40, 77,155.38 and 21,872.52

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Solution

The fourth proportional to 51,429.40, 77,155.38 and 21,872.52 is: 32,813.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,429.40 : 77,155.38 = 21,872.52 : x
  2. Step 2: Convert to fraction form
    51,429.40/77,155.38 = 21,872.52/x
  3. Step 3: Cross multiply
    51,429.40x = 77,155.38 × 21,872.52
  4. Step 4: Simplify right side
    51,429.40x = 1,687,582,592.16
  5. Step 5: Solve for x
    x = 1,687,582,592.16/51,429.40
  6. Step 6: Final answer
    x = 32,813.58

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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.