Home / 84,348.72-116,321.67-54,143.28

Finding the Fourth Proportional to 84,348.72, 116,321.67 and 54,143.28

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Solution

The fourth proportional to 84,348.72, 116,321.67 and 54,143.28 is: 74,666.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,348.72 : 116,321.67 = 54,143.28 : x
  2. Step 2: Convert to fraction form
    84,348.72/116,321.67 = 54,143.28/x
  3. Step 3: Cross multiply
    84,348.72x = 116,321.67 × 54,143.28
  4. Step 4: Simplify right side
    84,348.72x = 6,298,036,748.88
  5. Step 5: Solve for x
    x = 6,298,036,748.88/84,348.72
  6. Step 6: Final answer
    x = 74,666.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.