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Finding the Fourth Proportional to 68,065.80, 101,855.70 and 43,117.80

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Solution

The fourth proportional to 68,065.80, 101,855.70 and 43,117.80 is: 64,522.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,065.80 : 101,855.70 = 43,117.80 : x
  2. Step 2: Convert to fraction form
    68,065.80/101,855.70 = 43,117.80/x
  3. Step 3: Cross multiply
    68,065.80x = 101,855.70 × 43,117.80
  4. Step 4: Simplify right side
    68,065.80x = 4,391,793,701.46
  5. Step 5: Solve for x
    x = 4,391,793,701.46/68,065.80
  6. Step 6: Final answer
    x = 64,522.77

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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.