Home / 87,911.23-121,317.81-47,624.89

Finding the Fourth Proportional to 87,911.23, 121,317.81 and 47,624.89

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Solution

The fourth proportional to 87,911.23, 121,317.81 and 47,624.89 is: 65,722.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,911.23 : 121,317.81 = 47,624.89 : x
  2. Step 2: Convert to fraction form
    87,911.23/121,317.81 = 47,624.89/x
  3. Step 3: Cross multiply
    87,911.23x = 121,317.81 × 47,624.89
  4. Step 4: Simplify right side
    87,911.23x = 5,777,747,356.29
  5. Step 5: Solve for x
    x = 5,777,747,356.29/87,911.23
  6. Step 6: Final answer
    x = 65,722.52

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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.