Home / 87,106.95-120,209.94-51,290.37

Finding the Fourth Proportional to 87,106.95, 120,209.94 and 51,290.37

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Solution

The fourth proportional to 87,106.95, 120,209.94 and 51,290.37 is: 70,782.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,106.95 : 120,209.94 = 51,290.37 : x
  2. Step 2: Convert to fraction form
    87,106.95/120,209.94 = 51,290.37/x
  3. Step 3: Cross multiply
    87,106.95x = 120,209.94 × 51,290.37
  4. Step 4: Simplify right side
    87,106.95x = 6,165,612,300.28
  5. Step 5: Solve for x
    x = 6,165,612,300.28/87,106.95
  6. Step 6: Final answer
    x = 70,782.09

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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.