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Finding the Fourth Proportional to 68,218.76, 102,341.98 and 21,460.76

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Solution

The fourth proportional to 68,218.76, 102,341.98 and 21,460.76 is: 32,195.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,218.76 : 102,341.98 = 21,460.76 : x
  2. Step 2: Convert to fraction form
    68,218.76/102,341.98 = 21,460.76/x
  3. Step 3: Cross multiply
    68,218.76x = 102,341.98 × 21,460.76
  4. Step 4: Simplify right side
    68,218.76x = 2,196,336,670.70
  5. Step 5: Solve for x
    x = 2,196,336,670.70/68,218.76
  6. Step 6: Final answer
    x = 32,195.49

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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.