Home / 87,011.74-120,083.76-50,711.28

Finding the Fourth Proportional to 87,011.74, 120,083.76 and 50,711.28

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Solution

The fourth proportional to 87,011.74, 120,083.76 and 50,711.28 is: 69,985.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,011.74 : 120,083.76 = 50,711.28 : x
  2. Step 2: Convert to fraction form
    87,011.74/120,083.76 = 50,711.28/x
  3. Step 3: Cross multiply
    87,011.74x = 120,083.76 × 50,711.28
  4. Step 4: Simplify right side
    87,011.74x = 6,089,601,176.81
  5. Step 5: Solve for x
    x = 6,089,601,176.81/87,011.74
  6. Step 6: Final answer
    x = 69,985.97

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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.