Home / 53,138.16-79,712.64-18,080.28

Finding the Fourth Proportional to 53,138.16, 79,712.64 and 18,080.28

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Solution

The fourth proportional to 53,138.16, 79,712.64 and 18,080.28 is: 27,122.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,138.16 : 79,712.64 = 18,080.28 : x
  2. Step 2: Convert to fraction form
    53,138.16/79,712.64 = 18,080.28/x
  3. Step 3: Cross multiply
    53,138.16x = 79,712.64 × 18,080.28
  4. Step 4: Simplify right side
    53,138.16x = 1,441,226,850.74
  5. Step 5: Solve for x
    x = 1,441,226,850.74/53,138.16
  6. Step 6: Final answer
    x = 27,122.26

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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.