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Finding the Fourth Proportional to 68,937.68, 103,089.07 and 65,574.65

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Solution

The fourth proportional to 68,937.68, 103,089.07 and 65,574.65 is: 98,060.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,937.68 : 103,089.07 = 65,574.65 : x
  2. Step 2: Convert to fraction form
    68,937.68/103,089.07 = 65,574.65/x
  3. Step 3: Cross multiply
    68,937.68x = 103,089.07 × 65,574.65
  4. Step 4: Simplify right side
    68,937.68x = 6,760,029,777.86
  5. Step 5: Solve for x
    x = 6,760,029,777.86/68,937.68
  6. Step 6: Final answer
    x = 98,060.01

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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.