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Finding the Fourth Proportional to 68,681.13, 103,489.69 and 56,474.61

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Solution

The fourth proportional to 68,681.13, 103,489.69 and 56,474.61 is: 85,096.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,681.13 : 103,489.69 = 56,474.61 : x
  2. Step 2: Convert to fraction form
    68,681.13/103,489.69 = 56,474.61/x
  3. Step 3: Cross multiply
    68,681.13x = 103,489.69 × 56,474.61
  4. Step 4: Simplify right side
    68,681.13x = 5,844,539,881.77
  5. Step 5: Solve for x
    x = 5,844,539,881.77/68,681.13
  6. Step 6: Final answer
    x = 85,096.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.