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Finding the Fourth Proportional to 73,127.88, 109,700.06 and 28,748.79

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Solution

The fourth proportional to 73,127.88, 109,700.06 and 28,748.79 is: 43,126.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,127.88 : 109,700.06 = 28,748.79 : x
  2. Step 2: Convert to fraction form
    73,127.88/109,700.06 = 28,748.79/x
  3. Step 3: Cross multiply
    73,127.88x = 109,700.06 × 28,748.79
  4. Step 4: Simplify right side
    73,127.88x = 3,153,743,844.18
  5. Step 5: Solve for x
    x = 3,153,743,844.18/73,127.88
  6. Step 6: Final answer
    x = 43,126.42

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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.