Home / 59,486.13-82,105.79-40,398.21

Finding the Fourth Proportional to 59,486.13, 82,105.79 and 40,398.21

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Solution

The fourth proportional to 59,486.13, 82,105.79 and 40,398.21 is: 55,759.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,486.13 : 82,105.79 = 40,398.21 : x
  2. Step 2: Convert to fraction form
    59,486.13/82,105.79 = 40,398.21/x
  3. Step 3: Cross multiply
    59,486.13x = 82,105.79 × 40,398.21
  4. Step 4: Simplify right side
    59,486.13x = 3,316,926,744.64
  5. Step 5: Solve for x
    x = 3,316,926,744.64/59,486.13
  6. Step 6: Final answer
    x = 55,759.67

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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.