Home / 87,012.24-120,034.18-56,783.58

Finding the Fourth Proportional to 87,012.24, 120,034.18 and 56,783.58

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Solution

The fourth proportional to 87,012.24, 120,034.18 and 56,783.58 is: 78,333.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,012.24 : 120,034.18 = 56,783.58 : x
  2. Step 2: Convert to fraction form
    87,012.24/120,034.18 = 56,783.58/x
  3. Step 3: Cross multiply
    87,012.24x = 120,034.18 × 56,783.58
  4. Step 4: Simplify right side
    87,012.24x = 6,815,970,462.76
  5. Step 5: Solve for x
    x = 6,815,970,462.76/87,012.24
  6. Step 6: Final answer
    x = 78,333.47

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1.5x scale

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.