Home / 72,947.15-109,376.92-28,520.93

Finding the Fourth Proportional to 72,947.15, 109,376.92 and 28,520.93

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Solution

The fourth proportional to 72,947.15, 109,376.92 and 28,520.93 is: 42,764.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,947.15 : 109,376.92 = 28,520.93 : x
  2. Step 2: Convert to fraction form
    72,947.15/109,376.92 = 28,520.93/x
  3. Step 3: Cross multiply
    72,947.15x = 109,376.92 × 28,520.93
  4. Step 4: Simplify right side
    72,947.15x = 3,119,531,478.94
  5. Step 5: Solve for x
    x = 3,119,531,478.94/72,947.15
  6. Step 6: Final answer
    x = 42,764.27

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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.