Home / 90,515.18-135,740.36-31,334.96

Finding the Fourth Proportional to 90,515.18, 135,740.36 and 31,334.96

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Solution

The fourth proportional to 90,515.18, 135,740.36 and 31,334.96 is: 46,991.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,515.18 : 135,740.36 = 31,334.96 : x
  2. Step 2: Convert to fraction form
    90,515.18/135,740.36 = 31,334.96/x
  3. Step 3: Cross multiply
    90,515.18x = 135,740.36 × 31,334.96
  4. Step 4: Simplify right side
    90,515.18x = 4,253,418,750.99
  5. Step 5: Solve for x
    x = 4,253,418,750.99/90,515.18
  6. Step 6: Final answer
    x = 46,991.22

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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.