Home / 84,403.60-116,371.10-54,135.52

Finding the Fourth Proportional to 84,403.60, 116,371.10 and 54,135.52

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Solution

The fourth proportional to 84,403.60, 116,371.10 and 54,135.52 is: 74,639.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,403.60 : 116,371.10 = 54,135.52 : x
  2. Step 2: Convert to fraction form
    84,403.60/116,371.10 = 54,135.52/x
  3. Step 3: Cross multiply
    84,403.60x = 116,371.10 × 54,135.52
  4. Step 4: Simplify right side
    84,403.60x = 6,299,809,855.88
  5. Step 5: Solve for x
    x = 6,299,809,855.88/84,403.60
  6. Step 6: Final answer
    x = 74,639.12

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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.