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Finding the Fourth Proportional to 68,950.70, 103,426.05 and 65,743.10

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Solution

The fourth proportional to 68,950.70, 103,426.05 and 65,743.10 is: 98,614.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,950.70 : 103,426.05 = 65,743.10 : x
  2. Step 2: Convert to fraction form
    68,950.70/103,426.05 = 65,743.10/x
  3. Step 3: Cross multiply
    68,950.70x = 103,426.05 × 65,743.10
  4. Step 4: Simplify right side
    68,950.70x = 6,799,549,147.76
  5. Step 5: Solve for x
    x = 6,799,549,147.76/68,950.70
  6. Step 6: Final answer
    x = 98,614.65

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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.