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Finding the Fourth Proportional to 90,660.82, 125,071.68 and 60,416.68

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Solution

The fourth proportional to 90,660.82, 125,071.68 and 60,416.68 is: 83,348.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,660.82 : 125,071.68 = 60,416.68 : x
  2. Step 2: Convert to fraction form
    90,660.82/125,071.68 = 60,416.68/x
  3. Step 3: Cross multiply
    90,660.82x = 125,071.68 × 60,416.68
  4. Step 4: Simplify right side
    90,660.82x = 7,556,415,667.62
  5. Step 5: Solve for x
    x = 7,556,415,667.62/90,660.82
  6. Step 6: Final answer
    x = 83,348.19

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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.