Home / 84,021.60-116,108.24-66,257.70

Finding the Fourth Proportional to 84,021.60, 116,108.24 and 66,257.70

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Solution

The fourth proportional to 84,021.60, 116,108.24 and 66,257.70 is: 91,560.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,021.60 : 116,108.24 = 66,257.70 : x
  2. Step 2: Convert to fraction form
    84,021.60/116,108.24 = 66,257.70/x
  3. Step 3: Cross multiply
    84,021.60x = 116,108.24 × 66,257.70
  4. Step 4: Simplify right side
    84,021.60x = 7,693,064,933.45
  5. Step 5: Solve for x
    x = 7,693,064,933.45/84,021.60
  6. Step 6: Final answer
    x = 91,560.56

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1.5x scale

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.