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Finding the Fourth Proportional to 68,763.54, 103,159.89 and 21,377.46

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Solution

The fourth proportional to 68,763.54, 103,159.89 and 21,377.46 is: 32,070.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,763.54 : 103,159.89 = 21,377.46 : x
  2. Step 2: Convert to fraction form
    68,763.54/103,159.89 = 21,377.46/x
  3. Step 3: Cross multiply
    68,763.54x = 103,159.89 × 21,377.46
  4. Step 4: Simplify right side
    68,763.54x = 2,205,296,422.08
  5. Step 5: Solve for x
    x = 2,205,296,422.08/68,763.54
  6. Step 6: Final answer
    x = 32,070.72

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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.