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Finding the Fourth Proportional to 92,789.92, 128,049.51 and 50,347.54

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Solution

The fourth proportional to 92,789.92, 128,049.51 and 50,347.54 is: 69,479.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,789.92 : 128,049.51 = 50,347.54 : x
  2. Step 2: Convert to fraction form
    92,789.92/128,049.51 = 50,347.54/x
  3. Step 3: Cross multiply
    92,789.92x = 128,049.51 × 50,347.54
  4. Step 4: Simplify right side
    92,789.92x = 6,446,977,826.71
  5. Step 5: Solve for x
    x = 6,446,977,826.71/92,789.92
  6. Step 6: Final answer
    x = 69,479.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.