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Finding the Fourth Proportional to 68,686.38, 103,014.08 and 34,918.19

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Solution

The fourth proportional to 68,686.38, 103,014.08 and 34,918.19 is: 52,369.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,686.38 : 103,014.08 = 34,918.19 : x
  2. Step 2: Convert to fraction form
    68,686.38/103,014.08 = 34,918.19/x
  3. Step 3: Cross multiply
    68,686.38x = 103,014.08 × 34,918.19
  4. Step 4: Simplify right side
    68,686.38x = 3,597,065,045.70
  5. Step 5: Solve for x
    x = 3,597,065,045.70/68,686.38
  6. Step 6: Final answer
    x = 52,369.41

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1.5x scale

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.