Home / 72,947.40-109,377.30-28,521.22

Finding the Fourth Proportional to 72,947.40, 109,377.30 and 28,521.22

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Solution

The fourth proportional to 72,947.40, 109,377.30 and 28,521.22 is: 42,764.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,947.40 : 109,377.30 = 28,521.22 : x
  2. Step 2: Convert to fraction form
    72,947.40/109,377.30 = 28,521.22/x
  3. Step 3: Cross multiply
    72,947.40x = 109,377.30 × 28,521.22
  4. Step 4: Simplify right side
    72,947.40x = 3,119,574,036.31
  5. Step 5: Solve for x
    x = 3,119,574,036.31/72,947.40
  6. Step 6: Final answer
    x = 42,764.70

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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.