Home / 87,030.72-120,105.36-48,791.88

Finding the Fourth Proportional to 87,030.72, 120,105.36 and 48,791.88

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Solution

The fourth proportional to 87,030.72, 120,105.36 and 48,791.88 is: 67,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,030.72 : 120,105.36 = 48,791.88 : x
  2. Step 2: Convert to fraction form
    87,030.72/120,105.36 = 48,791.88/x
  3. Step 3: Cross multiply
    87,030.72x = 120,105.36 × 48,791.88
  4. Step 4: Simplify right side
    87,030.72x = 5,860,166,312.48
  5. Step 5: Solve for x
    x = 5,860,166,312.48/87,030.72
  6. Step 6: Final answer
    x = 67,334.46

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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.