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Finding the Fourth Proportional to 77,218.87, 115,903.20 and 37,265.97

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Solution

The fourth proportional to 77,218.87, 115,903.20 and 37,265.97 is: 55,935.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,218.87 : 115,903.20 = 37,265.97 : x
  2. Step 2: Convert to fraction form
    77,218.87/115,903.20 = 37,265.97/x
  3. Step 3: Cross multiply
    77,218.87x = 115,903.20 × 37,265.97
  4. Step 4: Simplify right side
    77,218.87x = 4,319,244,987.77
  5. Step 5: Solve for x
    x = 4,319,244,987.77/77,218.87
  6. Step 6: Final answer
    x = 55,935.10

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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.