Home / 72,816.72-109,251.36-25,438.86

Finding the Fourth Proportional to 72,816.72, 109,251.36 and 25,438.86

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Solution

The fourth proportional to 72,816.72, 109,251.36 and 25,438.86 is: 38,167.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,816.72 : 109,251.36 = 25,438.86 : x
  2. Step 2: Convert to fraction form
    72,816.72/109,251.36 = 25,438.86/x
  3. Step 3: Cross multiply
    72,816.72x = 109,251.36 × 25,438.86
  4. Step 4: Simplify right side
    72,816.72x = 2,779,230,051.85
  5. Step 5: Solve for x
    x = 2,779,230,051.85/72,816.72
  6. Step 6: Final answer
    x = 38,167.47

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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.