Home / 87,085.45-120,203.44-56,875.47

Finding the Fourth Proportional to 87,085.45, 120,203.44 and 56,875.47

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Solution

The fourth proportional to 87,085.45, 120,203.44 and 56,875.47 is: 78,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,085.45 : 120,203.44 = 56,875.47 : x
  2. Step 2: Convert to fraction form
    87,085.45/120,203.44 = 56,875.47/x
  3. Step 3: Cross multiply
    87,085.45x = 120,203.44 × 56,875.47
  4. Step 4: Simplify right side
    87,085.45x = 6,836,626,552.67
  5. Step 5: Solve for x
    x = 6,836,626,552.67/87,085.45
  6. Step 6: Final answer
    x = 78,504.81

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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.