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Finding the Fourth Proportional to 68,278.35, 102,417.52 and 21,534.87

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Solution

The fourth proportional to 68,278.35, 102,417.52 and 21,534.87 is: 32,302.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,278.35 : 102,417.52 = 21,534.87 : x
  2. Step 2: Convert to fraction form
    68,278.35/102,417.52 = 21,534.87/x
  3. Step 3: Cross multiply
    68,278.35x = 102,417.52 × 21,534.87
  4. Step 4: Simplify right side
    68,278.35x = 2,205,547,749.80
  5. Step 5: Solve for x
    x = 2,205,547,749.80/68,278.35
  6. Step 6: Final answer
    x = 32,302.30

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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.