Home / 53,219.13-79,828.69-18,158.78

Finding the Fourth Proportional to 53,219.13, 79,828.69 and 18,158.78

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Solution

The fourth proportional to 53,219.13, 79,828.69 and 18,158.78 is: 27,238.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,219.13 : 79,828.69 = 18,158.78 : x
  2. Step 2: Convert to fraction form
    53,219.13/79,828.69 = 18,158.78/x
  3. Step 3: Cross multiply
    53,219.13x = 79,828.69 × 18,158.78
  4. Step 4: Simplify right side
    53,219.13x = 1,449,591,619.40
  5. Step 5: Solve for x
    x = 1,449,591,619.40/53,219.13
  6. Step 6: Final answer
    x = 27,238.17

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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.