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Finding the Fourth Proportional to 54,244.92, 81,370.54 and 20,970.12

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Solution

The fourth proportional to 54,244.92, 81,370.54 and 20,970.12 is: 31,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,244.92 : 81,370.54 = 20,970.12 : x
  2. Step 2: Convert to fraction form
    54,244.92/81,370.54 = 20,970.12/x
  3. Step 3: Cross multiply
    54,244.92x = 81,370.54 × 20,970.12
  4. Step 4: Simplify right side
    54,244.92x = 1,706,349,988.26
  5. Step 5: Solve for x
    x = 1,706,349,988.26/54,244.92
  6. Step 6: Final answer
    x = 31,456.40

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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.