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Finding the Fourth Proportional to 54,335.92, 81,496.95 and 21,033.20

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Solution

The fourth proportional to 54,335.92, 81,496.95 and 21,033.20 is: 31,547.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,335.92 : 81,496.95 = 21,033.20 : x
  2. Step 2: Convert to fraction form
    54,335.92/81,496.95 = 21,033.20/x
  3. Step 3: Cross multiply
    54,335.92x = 81,496.95 × 21,033.20
  4. Step 4: Simplify right side
    54,335.92x = 1,714,141,241.26
  5. Step 5: Solve for x
    x = 1,714,141,241.26/54,335.92
  6. Step 6: Final answer
    x = 31,547.11

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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.