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Finding the Fourth Proportional to 69,959.82, 96,545.67 and 38,128.74

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Solution

The fourth proportional to 69,959.82, 96,545.67 and 38,128.74 is: 52,618.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,959.82 : 96,545.67 = 38,128.74 : x
  2. Step 2: Convert to fraction form
    69,959.82/96,545.67 = 38,128.74/x
  3. Step 3: Cross multiply
    69,959.82x = 96,545.67 × 38,128.74
  4. Step 4: Simplify right side
    69,959.82x = 3,681,164,749.56
  5. Step 5: Solve for x
    x = 3,681,164,749.56/69,959.82
  6. Step 6: Final answer
    x = 52,618.27

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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.