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Finding the Fourth Proportional to 54,278.61, 81,420.61 and 16,864.17

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Solution

The fourth proportional to 54,278.61, 81,420.61 and 16,864.17 is: 25,297.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,278.61 : 81,420.61 = 16,864.17 : x
  2. Step 2: Convert to fraction form
    54,278.61/81,420.61 = 16,864.17/x
  3. Step 3: Cross multiply
    54,278.61x = 81,420.61 × 16,864.17
  4. Step 4: Simplify right side
    54,278.61x = 1,373,091,008.54
  5. Step 5: Solve for x
    x = 1,373,091,008.54/54,278.61
  6. Step 6: Final answer
    x = 25,297.09

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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.