Home / 91,631.40-126,459-51,344.52

Finding the Fourth Proportional to 91,631.40, 126,459 and 51,344.52

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Solution

The fourth proportional to 91,631.40, 126,459 and 51,344.52 is: 70,859.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,631.40 : 126,459 = 51,344.52 : x
  2. Step 2: Convert to fraction form
    91,631.40/126,459 = 51,344.52/x
  3. Step 3: Cross multiply
    91,631.40x = 126,459 × 51,344.52
  4. Step 4: Simplify right side
    91,631.40x = 6,492,976,654.68
  5. Step 5: Solve for x
    x = 6,492,976,654.68/91,631.40
  6. Step 6: Final answer
    x = 70,859.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.