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Finding the Fourth Proportional to 77,656.90, 116,472.38 and 21,502.69

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Solution

The fourth proportional to 77,656.90, 116,472.38 and 21,502.69 is: 32,250.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,656.90 : 116,472.38 = 21,502.69 : x
  2. Step 2: Convert to fraction form
    77,656.90/116,472.38 = 21,502.69/x
  3. Step 3: Cross multiply
    77,656.90x = 116,472.38 × 21,502.69
  4. Step 4: Simplify right side
    77,656.90x = 2,504,468,790.83
  5. Step 5: Solve for x
    x = 2,504,468,790.83/77,656.90
  6. Step 6: Final answer
    x = 32,250.43

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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.