Home / 84,591-126,895.07-31,297.05

Finding the Fourth Proportional to 84,591, 126,895.07 and 31,297.05

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Solution

The fourth proportional to 84,591, 126,895.07 and 31,297.05 is: 46,948.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,591 : 126,895.07 = 31,297.05 : x
  2. Step 2: Convert to fraction form
    84,591/126,895.07 = 31,297.05/x
  3. Step 3: Cross multiply
    84,591x = 126,895.07 × 31,297.05
  4. Step 4: Simplify right side
    84,591x = 3,971,441,428.79
  5. Step 5: Solve for x
    x = 3,971,441,428.79/84,591
  6. Step 6: Final answer
    x = 46,948.75

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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.