Home / 84,087.13-126,161.45-39,129.93

Finding the Fourth Proportional to 84,087.13, 126,161.45 and 39,129.93

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Solution

The fourth proportional to 84,087.13, 126,161.45 and 39,129.93 is: 58,709.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,087.13 : 126,161.45 = 39,129.93 : x
  2. Step 2: Convert to fraction form
    84,087.13/126,161.45 = 39,129.93/x
  3. Step 3: Cross multiply
    84,087.13x = 126,161.45 × 39,129.93
  4. Step 4: Simplify right side
    84,087.13x = 4,936,688,707.20
  5. Step 5: Solve for x
    x = 4,936,688,707.20/84,087.13
  6. Step 6: Final answer
    x = 58,709.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.