Home / 72,856.11-109,219.33-28,472.77

Finding the Fourth Proportional to 72,856.11, 109,219.33 and 28,472.77

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Solution

The fourth proportional to 72,856.11, 109,219.33 and 28,472.77 is: 42,683.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,856.11 : 109,219.33 = 28,472.77 : x
  2. Step 2: Convert to fraction form
    72,856.11/109,219.33 = 28,472.77/x
  3. Step 3: Cross multiply
    72,856.11x = 109,219.33 × 28,472.77
  4. Step 4: Simplify right side
    72,856.11x = 3,109,776,862.64
  5. Step 5: Solve for x
    x = 3,109,776,862.64/72,856.11
  6. Step 6: Final answer
    x = 42,683.82

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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.