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Finding the Fourth Proportional to 68,117.10, 102,175.65 and 28,661.10

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Solution

The fourth proportional to 68,117.10, 102,175.65 and 28,661.10 is: 42,991.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,117.10 : 102,175.65 = 28,661.10 : x
  2. Step 2: Convert to fraction form
    68,117.10/102,175.65 = 28,661.10/x
  3. Step 3: Cross multiply
    68,117.10x = 102,175.65 × 28,661.10
  4. Step 4: Simplify right side
    68,117.10x = 2,928,466,522.22
  5. Step 5: Solve for x
    x = 2,928,466,522.22/68,117.10
  6. Step 6: Final answer
    x = 42,991.65

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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.