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Finding the Fourth Proportional to 90,005.90, 135,008.84 and 27,676.40

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Solution

The fourth proportional to 90,005.90, 135,008.84 and 27,676.40 is: 41,514.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,005.90 : 135,008.84 = 27,676.40 : x
  2. Step 2: Convert to fraction form
    90,005.90/135,008.84 = 27,676.40/x
  3. Step 3: Cross multiply
    90,005.90x = 135,008.84 × 27,676.40
  4. Step 4: Simplify right side
    90,005.90x = 3,736,558,053.52
  5. Step 5: Solve for x
    x = 3,736,558,053.52/90,005.90
  6. Step 6: Final answer
    x = 41,514.59

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1.5x scale

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.