Home / 53,139.40-79,722.42-18,079.36

Finding the Fourth Proportional to 53,139.40, 79,722.42 and 18,079.36

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Solution

The fourth proportional to 53,139.40, 79,722.42 and 18,079.36 is: 27,123.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,139.40 : 79,722.42 = 18,079.36 : x
  2. Step 2: Convert to fraction form
    53,139.40/79,722.42 = 18,079.36/x
  3. Step 3: Cross multiply
    53,139.40x = 79,722.42 × 18,079.36
  4. Step 4: Simplify right side
    53,139.40x = 1,441,330,331.25
  5. Step 5: Solve for x
    x = 1,441,330,331.25/53,139.40
  6. Step 6: Final answer
    x = 27,123.57

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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.