Home / 90,566.45-135,531.84-72,753.33

Finding the Fourth Proportional to 90,566.45, 135,531.84 and 72,753.33

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Solution

The fourth proportional to 90,566.45, 135,531.84 and 72,753.33 is: 108,874.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,566.45 : 135,531.84 = 72,753.33 : x
  2. Step 2: Convert to fraction form
    90,566.45/135,531.84 = 72,753.33/x
  3. Step 3: Cross multiply
    90,566.45x = 135,531.84 × 72,753.33
  4. Step 4: Simplify right side
    90,566.45x = 9,860,392,681.03
  5. Step 5: Solve for x
    x = 9,860,392,681.03/90,566.45
  6. Step 6: Final answer
    x = 108,874.68

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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.