Home / 91,709.08-126,504.79-57,663.61

Finding the Fourth Proportional to 91,709.08, 126,504.79 and 57,663.61

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Solution

The fourth proportional to 91,709.08, 126,504.79 and 57,663.61 is: 79,541.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,709.08 : 126,504.79 = 57,663.61 : x
  2. Step 2: Convert to fraction form
    91,709.08/126,504.79 = 57,663.61/x
  3. Step 3: Cross multiply
    91,709.08x = 126,504.79 × 57,663.61
  4. Step 4: Simplify right side
    91,709.08x = 7,294,722,873.69
  5. Step 5: Solve for x
    x = 7,294,722,873.69/91,709.08
  6. Step 6: Final answer
    x = 79,541.99

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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.