Home / 87,073.76-120,025.32-56,805.68

Finding the Fourth Proportional to 87,073.76, 120,025.32 and 56,805.68

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Solution

The fourth proportional to 87,073.76, 120,025.32 and 56,805.68 is: 78,302.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,073.76 : 120,025.32 = 56,805.68 : x
  2. Step 2: Convert to fraction form
    87,073.76/120,025.32 = 56,805.68/x
  3. Step 3: Cross multiply
    87,073.76x = 120,025.32 × 56,805.68
  4. Step 4: Simplify right side
    87,073.76x = 6,818,119,919.82
  5. Step 5: Solve for x
    x = 6,818,119,919.82/87,073.76
  6. Step 6: Final answer
    x = 78,302.81

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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.