Home / 87,061.51-120,168.53-51,263.11

Finding the Fourth Proportional to 87,061.51, 120,168.53 and 51,263.11

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Solution

The fourth proportional to 87,061.51, 120,168.53 and 51,263.11 is: 70,757.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,061.51 : 120,168.53 = 51,263.11 : x
  2. Step 2: Convert to fraction form
    87,061.51/120,168.53 = 51,263.11/x
  3. Step 3: Cross multiply
    87,061.51x = 120,168.53 × 51,263.11
  4. Step 4: Simplify right side
    87,061.51x = 6,160,212,571.93
  5. Step 5: Solve for x
    x = 6,160,212,571.93/87,061.51
  6. Step 6: Final answer
    x = 70,757.02

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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.