Home / 53,139.16-79,714.14-18,081.28

Finding the Fourth Proportional to 53,139.16, 79,714.14 and 18,081.28

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Solution

The fourth proportional to 53,139.16, 79,714.14 and 18,081.28 is: 27,123.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,139.16 : 79,714.14 = 18,081.28 : x
  2. Step 2: Convert to fraction form
    53,139.16/79,714.14 = 18,081.28/x
  3. Step 3: Cross multiply
    53,139.16x = 79,714.14 × 18,081.28
  4. Step 4: Simplify right side
    53,139.16x = 1,441,333,685.30
  5. Step 5: Solve for x
    x = 1,441,333,685.30/53,139.16
  6. Step 6: Final answer
    x = 27,123.76

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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.