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Finding the Fourth Proportional to 53,163, 79,744.50 and 21,999.06

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Solution

The fourth proportional to 53,163, 79,744.50 and 21,999.06 is: 32,998.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,163 : 79,744.50 = 21,999.06 : x
  2. Step 2: Convert to fraction form
    53,163/79,744.50 = 21,999.06/x
  3. Step 3: Cross multiply
    53,163x = 79,744.50 × 21,999.06
  4. Step 4: Simplify right side
    53,163x = 1,754,304,040.17
  5. Step 5: Solve for x
    x = 1,754,304,040.17/53,163
  6. Step 6: Final answer
    x = 32,998.59

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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.