Home / 91,709.72-126,505.64-57,664.25

Finding the Fourth Proportional to 91,709.72, 126,505.64 and 57,664.25

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Solution

The fourth proportional to 91,709.72, 126,505.64 and 57,664.25 is: 79,542.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,709.72 : 126,505.64 = 57,664.25 : x
  2. Step 2: Convert to fraction form
    91,709.72/126,505.64 = 57,664.25/x
  3. Step 3: Cross multiply
    91,709.72x = 126,505.64 × 57,664.25
  4. Step 4: Simplify right side
    91,709.72x = 7,294,851,930.52
  5. Step 5: Solve for x
    x = 7,294,851,930.52/91,709.72
  6. Step 6: Final answer
    x = 79,542.85

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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.