Home / 90,537.95-135,716.51-45,421.46

Finding the Fourth Proportional to 90,537.95, 135,716.51 and 45,421.46

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Solution

The fourth proportional to 90,537.95, 135,716.51 and 45,421.46 is: 68,086.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,537.95 : 135,716.51 = 45,421.46 : x
  2. Step 2: Convert to fraction form
    90,537.95/135,716.51 = 45,421.46/x
  3. Step 3: Cross multiply
    90,537.95x = 135,716.51 × 45,421.46
  4. Step 4: Simplify right side
    90,537.95x = 6,164,441,974.21
  5. Step 5: Solve for x
    x = 6,164,441,974.21/90,537.95
  6. Step 6: Final answer
    x = 68,086.83

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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.