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Finding the Fourth Proportional to 77,375.71, 116,060.83 and 21,214.92

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Solution

The fourth proportional to 77,375.71, 116,060.83 and 21,214.92 is: 31,821.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,375.71 : 116,060.83 = 21,214.92 : x
  2. Step 2: Convert to fraction form
    77,375.71/116,060.83 = 21,214.92/x
  3. Step 3: Cross multiply
    77,375.71x = 116,060.83 × 21,214.92
  4. Step 4: Simplify right side
    77,375.71x = 2,462,220,952.93
  5. Step 5: Solve for x
    x = 2,462,220,952.93/77,375.71
  6. Step 6: Final answer
    x = 31,821.63

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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.