Home / 87,090.57-120,189.27-51,292.13

Finding the Fourth Proportional to 87,090.57, 120,189.27 and 51,292.13

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Solution

The fourth proportional to 87,090.57, 120,189.27 and 51,292.13 is: 70,785.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,090.57 : 120,189.27 = 51,292.13 : x
  2. Step 2: Convert to fraction form
    87,090.57/120,189.27 = 51,292.13/x
  3. Step 3: Cross multiply
    87,090.57x = 120,189.27 × 51,292.13
  4. Step 4: Simplify right side
    87,090.57x = 6,164,763,060.50
  5. Step 5: Solve for x
    x = 6,164,763,060.50/87,090.57
  6. Step 6: Final answer
    x = 70,785.66

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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.