Home / 85,744.41-128,095.05-55,512.36

Finding the Fourth Proportional to 85,744.41, 128,095.05 and 55,512.36

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Solution

The fourth proportional to 85,744.41, 128,095.05 and 55,512.36 is: 82,930.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,744.41 : 128,095.05 = 55,512.36 : x
  2. Step 2: Convert to fraction form
    85,744.41/128,095.05 = 55,512.36/x
  3. Step 3: Cross multiply
    85,744.41x = 128,095.05 × 55,512.36
  4. Step 4: Simplify right side
    85,744.41x = 7,110,858,529.82
  5. Step 5: Solve for x
    x = 7,110,858,529.82/85,744.41
  6. Step 6: Final answer
    x = 82,930.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.