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Finding the Fourth Proportional to 68,752.20, 103,205.10 and 64,240.20

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Solution

The fourth proportional to 68,752.20, 103,205.10 and 64,240.20 is: 96,432.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,752.20 : 103,205.10 = 64,240.20 : x
  2. Step 2: Convert to fraction form
    68,752.20/103,205.10 = 64,240.20/x
  3. Step 3: Cross multiply
    68,752.20x = 103,205.10 × 64,240.20
  4. Step 4: Simplify right side
    68,752.20x = 6,629,916,265.02
  5. Step 5: Solve for x
    x = 6,629,916,265.02/68,752.20
  6. Step 6: Final answer
    x = 96,432.06

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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.