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Finding the Fourth Proportional to 68,892.80, 103,339.20 and 65,612.30

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Solution

The fourth proportional to 68,892.80, 103,339.20 and 65,612.30 is: 98,418.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,892.80 : 103,339.20 = 65,612.30 : x
  2. Step 2: Convert to fraction form
    68,892.80/103,339.20 = 65,612.30/x
  3. Step 3: Cross multiply
    68,892.80x = 103,339.20 × 65,612.30
  4. Step 4: Simplify right side
    68,892.80x = 6,780,322,592.16
  5. Step 5: Solve for x
    x = 6,780,322,592.16/68,892.80
  6. Step 6: Final answer
    x = 98,418.45

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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.