Home / 87,841.70-121,172.09-55,566.34

Finding the Fourth Proportional to 87,841.70, 121,172.09 and 55,566.34

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Solution

The fourth proportional to 87,841.70, 121,172.09 and 55,566.34 is: 76,650.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,841.70 : 121,172.09 = 55,566.34 : x
  2. Step 2: Convert to fraction form
    87,841.70/121,172.09 = 55,566.34/x
  3. Step 3: Cross multiply
    87,841.70x = 121,172.09 × 55,566.34
  4. Step 4: Simplify right side
    87,841.70x = 6,733,088,970.69
  5. Step 5: Solve for x
    x = 6,733,088,970.69/87,841.70
  6. Step 6: Final answer
    x = 76,650.26

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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.