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Finding the Fourth Proportional to 72,029.70, 107,947.35 and 51,228.90

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Solution

The fourth proportional to 72,029.70, 107,947.35 and 51,228.90 is: 76,774.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,029.70 : 107,947.35 = 51,228.90 : x
  2. Step 2: Convert to fraction form
    72,029.70/107,947.35 = 51,228.90/x
  3. Step 3: Cross multiply
    72,029.70x = 107,947.35 × 51,228.90
  4. Step 4: Simplify right side
    72,029.70x = 5,530,023,998.42
  5. Step 5: Solve for x
    x = 5,530,023,998.42/72,029.70
  6. Step 6: Final answer
    x = 76,774.22

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1.5x scale

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.