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Finding the Fourth Proportional to 77,758.43, 107,251.35 and 51,903.93

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Solution

The fourth proportional to 77,758.43, 107,251.35 and 51,903.93 is: 71,590.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,758.43 : 107,251.35 = 51,903.93 : x
  2. Step 2: Convert to fraction form
    77,758.43/107,251.35 = 51,903.93/x
  3. Step 3: Cross multiply
    77,758.43x = 107,251.35 × 51,903.93
  4. Step 4: Simplify right side
    77,758.43x = 5,566,766,770.36
  5. Step 5: Solve for x
    x = 5,566,766,770.36/77,758.43
  6. Step 6: Final answer
    x = 71,590.53

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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.