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Finding the Fourth Proportional to 68,345.60, 102,487.56 and 28,882.40

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Solution

The fourth proportional to 68,345.60, 102,487.56 and 28,882.40 is: 43,310.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,345.60 : 102,487.56 = 28,882.40 : x
  2. Step 2: Convert to fraction form
    68,345.60/102,487.56 = 28,882.40/x
  3. Step 3: Cross multiply
    68,345.60x = 102,487.56 × 28,882.40
  4. Step 4: Simplify right side
    68,345.60x = 2,960,086,702.94
  5. Step 5: Solve for x
    x = 2,960,086,702.94/68,345.60
  6. Step 6: Final answer
    x = 43,310.57

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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.