Home / 85,914.29-128,889.97-25,937.79

Finding the Fourth Proportional to 85,914.29, 128,889.97 and 25,937.79

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Solution

The fourth proportional to 85,914.29, 128,889.97 and 25,937.79 is: 38,912.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,914.29 : 128,889.97 = 25,937.79 : x
  2. Step 2: Convert to fraction form
    85,914.29/128,889.97 = 25,937.79/x
  3. Step 3: Cross multiply
    85,914.29x = 128,889.97 × 25,937.79
  4. Step 4: Simplify right side
    85,914.29x = 3,343,120,652.74
  5. Step 5: Solve for x
    x = 3,343,120,652.74/85,914.29
  6. Step 6: Final answer
    x = 38,912.28

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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.