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Finding the Fourth Proportional to 71,655.20, 107,444.40 and 30,055.20

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Solution

The fourth proportional to 71,655.20, 107,444.40 and 30,055.20 is: 45,066.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,655.20 : 107,444.40 = 30,055.20 : x
  2. Step 2: Convert to fraction form
    71,655.20/107,444.40 = 30,055.20/x
  3. Step 3: Cross multiply
    71,655.20x = 107,444.40 × 30,055.20
  4. Step 4: Simplify right side
    71,655.20x = 3,229,262,930.88
  5. Step 5: Solve for x
    x = 3,229,262,930.88/71,655.20
  6. Step 6: Final answer
    x = 45,066.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.