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Finding the Fourth Proportional to 73,579.88, 109,758.93 and 71,119.91

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Solution

The fourth proportional to 73,579.88, 109,758.93 and 71,119.91 is: 106,089.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,579.88 : 109,758.93 = 71,119.91 : x
  2. Step 2: Convert to fraction form
    73,579.88/109,758.93 = 71,119.91/x
  3. Step 3: Cross multiply
    73,579.88x = 109,758.93 × 71,119.91
  4. Step 4: Simplify right side
    73,579.88x = 7,806,044,674.50
  5. Step 5: Solve for x
    x = 7,806,044,674.50/73,579.88
  6. Step 6: Final answer
    x = 106,089.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.