Home / 87,013.24-120,035.56-56,784.58

Finding the Fourth Proportional to 87,013.24, 120,035.56 and 56,784.58

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Solution

The fourth proportional to 87,013.24, 120,035.56 and 56,784.58 is: 78,334.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,013.24 : 120,035.56 = 56,784.58 : x
  2. Step 2: Convert to fraction form
    87,013.24/120,035.56 = 56,784.58/x
  3. Step 3: Cross multiply
    87,013.24x = 120,035.56 × 56,784.58
  4. Step 4: Simplify right side
    87,013.24x = 6,816,168,859.66
  5. Step 5: Solve for x
    x = 6,816,168,859.66/87,013.24
  6. Step 6: Final answer
    x = 78,334.85

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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.