Home / 85,709.05-128,646.49-41,367.01

Finding the Fourth Proportional to 85,709.05, 128,646.49 and 41,367.01

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Solution

The fourth proportional to 85,709.05, 128,646.49 and 41,367.01 is: 62,090.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,709.05 : 128,646.49 = 41,367.01 : x
  2. Step 2: Convert to fraction form
    85,709.05/128,646.49 = 41,367.01/x
  3. Step 3: Cross multiply
    85,709.05x = 128,646.49 × 41,367.01
  4. Step 4: Simplify right side
    85,709.05x = 5,321,721,309.58
  5. Step 5: Solve for x
    x = 5,321,721,309.58/85,709.05
  6. Step 6: Final answer
    x = 62,090.54

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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.