Home / 54,288.30-81,432.45-19,223.40

Finding the Fourth Proportional to 54,288.30, 81,432.45 and 19,223.40

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Solution

The fourth proportional to 54,288.30, 81,432.45 and 19,223.40 is: 28,835.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,288.30 : 81,432.45 = 19,223.40 : x
  2. Step 2: Convert to fraction form
    54,288.30/81,432.45 = 19,223.40/x
  3. Step 3: Cross multiply
    54,288.30x = 81,432.45 × 19,223.40
  4. Step 4: Simplify right side
    54,288.30x = 1,565,408,559.33
  5. Step 5: Solve for x
    x = 1,565,408,559.33/54,288.30
  6. Step 6: Final answer
    x = 28,835.10

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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.