Home / 77,764.49-107,282.39-49,032.78

Finding the Fourth Proportional to 77,764.49, 107,282.39 and 49,032.78

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Solution

The fourth proportional to 77,764.49, 107,282.39 and 49,032.78 is: 67,644.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,764.49 : 107,282.39 = 49,032.78 : x
  2. Step 2: Convert to fraction form
    77,764.49/107,282.39 = 49,032.78/x
  3. Step 3: Cross multiply
    77,764.49x = 107,282.39 × 49,032.78
  4. Step 4: Simplify right side
    77,764.49x = 5,260,353,826.74
  5. Step 5: Solve for x
    x = 5,260,353,826.74/77,764.49
  6. Step 6: Final answer
    x = 67,644.68

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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.