Home / 90,074.40-135,118.62-52,638.36

Finding the Fourth Proportional to 90,074.40, 135,118.62 and 52,638.36

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Solution

The fourth proportional to 90,074.40, 135,118.62 and 52,638.36 is: 78,961.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,074.40 : 135,118.62 = 52,638.36 : x
  2. Step 2: Convert to fraction form
    90,074.40/135,118.62 = 52,638.36/x
  3. Step 3: Cross multiply
    90,074.40x = 135,118.62 × 52,638.36
  4. Step 4: Simplify right side
    90,074.40x = 7,112,422,562.26
  5. Step 5: Solve for x
    x = 7,112,422,562.26/90,074.40
  6. Step 6: Final answer
    x = 78,961.64

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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.