Home / 87,109.34-120,207.36-51,300.86

Finding the Fourth Proportional to 87,109.34, 120,207.36 and 51,300.86

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Solution

The fourth proportional to 87,109.34, 120,207.36 and 51,300.86 is: 70,793.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,109.34 : 120,207.36 = 51,300.86 : x
  2. Step 2: Convert to fraction form
    87,109.34/120,207.36 = 51,300.86/x
  3. Step 3: Cross multiply
    87,109.34x = 120,207.36 × 51,300.86
  4. Step 4: Simplify right side
    87,109.34x = 6,166,740,946.33
  5. Step 5: Solve for x
    x = 6,166,740,946.33/87,109.34
  6. Step 6: Final answer
    x = 70,793.11

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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.