Home / 72,948.03-109,378.23-28,521.86

Finding the Fourth Proportional to 72,948.03, 109,378.23 and 28,521.86

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Solution

The fourth proportional to 72,948.03, 109,378.23 and 28,521.86 is: 42,765.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,948.03 : 109,378.23 = 28,521.86 : x
  2. Step 2: Convert to fraction form
    72,948.03/109,378.23 = 28,521.86/x
  3. Step 3: Cross multiply
    72,948.03x = 109,378.23 × 28,521.86
  4. Step 4: Simplify right side
    72,948.03x = 3,119,670,016.22
  5. Step 5: Solve for x
    x = 3,119,670,016.22/72,948.03
  6. Step 6: Final answer
    x = 42,765.65

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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.