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Finding the Fourth Proportional to 76,479.44, 105,524.48 and 42,943.28

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Solution

The fourth proportional to 76,479.44, 105,524.48 and 42,943.28 is: 59,252.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,479.44 : 105,524.48 = 42,943.28 : x
  2. Step 2: Convert to fraction form
    76,479.44/105,524.48 = 42,943.28/x
  3. Step 3: Cross multiply
    76,479.44x = 105,524.48 × 42,943.28
  4. Step 4: Simplify right side
    76,479.44x = 4,531,567,291.49
  5. Step 5: Solve for x
    x = 4,531,567,291.49/76,479.44
  6. Step 6: Final answer
    x = 59,252.10

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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.