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Finding the Fourth Proportional to 73,926.88, 102,019.03 and 40,392.88

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Solution

The fourth proportional to 73,926.88, 102,019.03 and 40,392.88 is: 55,742.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,926.88 : 102,019.03 = 40,392.88 : x
  2. Step 2: Convert to fraction form
    73,926.88/102,019.03 = 40,392.88/x
  3. Step 3: Cross multiply
    73,926.88x = 102,019.03 × 40,392.88
  4. Step 4: Simplify right side
    73,926.88x = 4,120,842,436.51
  5. Step 5: Solve for x
    x = 4,120,842,436.51/73,926.88
  6. Step 6: Final answer
    x = 55,742.14

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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.