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Finding the Fourth Proportional to 68,868.40, 103,302.60 and 57,714.70

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Solution

The fourth proportional to 68,868.40, 103,302.60 and 57,714.70 is: 86,572.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,868.40 : 103,302.60 = 57,714.70 : x
  2. Step 2: Convert to fraction form
    68,868.40/103,302.60 = 57,714.70/x
  3. Step 3: Cross multiply
    68,868.40x = 103,302.60 × 57,714.70
  4. Step 4: Simplify right side
    68,868.40x = 5,962,078,568.22
  5. Step 5: Solve for x
    x = 5,962,078,568.22/68,868.40
  6. Step 6: Final answer
    x = 86,572.05

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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.