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Finding the Fourth Proportional to 68,841.19, 102,689.71 and 67,699.33

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Solution

The fourth proportional to 68,841.19, 102,689.71 and 67,699.33 is: 100,986.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,841.19 : 102,689.71 = 67,699.33 : x
  2. Step 2: Convert to fraction form
    68,841.19/102,689.71 = 67,699.33/x
  3. Step 3: Cross multiply
    68,841.19x = 102,689.71 × 67,699.33
  4. Step 4: Simplify right side
    68,841.19x = 6,952,024,138.92
  5. Step 5: Solve for x
    x = 6,952,024,138.92/68,841.19
  6. Step 6: Final answer
    x = 100,986.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.