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Finding the Fourth Proportional to 77,886.82, 107,488.88 and 43,435.44

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Solution

The fourth proportional to 77,886.82, 107,488.88 and 43,435.44 is: 59,943.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,886.82 : 107,488.88 = 43,435.44 : x
  2. Step 2: Convert to fraction form
    77,886.82/107,488.88 = 43,435.44/x
  3. Step 3: Cross multiply
    77,886.82x = 107,488.88 × 43,435.44
  4. Step 4: Simplify right side
    77,886.82x = 4,668,826,743.61
  5. Step 5: Solve for x
    x = 4,668,826,743.61/77,886.82
  6. Step 6: Final answer
    x = 59,943.73

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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.