Home / 85,945.58-128,924.85-55,891.34

Finding the Fourth Proportional to 85,945.58, 128,924.85 and 55,891.34

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Solution

The fourth proportional to 85,945.58, 128,924.85 and 55,891.34 is: 83,841.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,945.58 : 128,924.85 = 55,891.34 : x
  2. Step 2: Convert to fraction form
    85,945.58/128,924.85 = 55,891.34/x
  3. Step 3: Cross multiply
    85,945.58x = 128,924.85 × 55,891.34
  4. Step 4: Simplify right side
    85,945.58x = 7,205,782,625.80
  5. Step 5: Solve for x
    x = 7,205,782,625.80/85,945.58
  6. Step 6: Final answer
    x = 83,841.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.