Home / 71,640.91-98,867.82-39,810.07

Finding the Fourth Proportional to 71,640.91, 98,867.82 and 39,810.07

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Solution

The fourth proportional to 71,640.91, 98,867.82 and 39,810.07 is: 54,939.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,640.91 : 98,867.82 = 39,810.07 : x
  2. Step 2: Convert to fraction form
    71,640.91/98,867.82 = 39,810.07/x
  3. Step 3: Cross multiply
    71,640.91x = 98,867.82 × 39,810.07
  4. Step 4: Simplify right side
    71,640.91x = 3,935,934,834.95
  5. Step 5: Solve for x
    x = 3,935,934,834.95/71,640.91
  6. Step 6: Final answer
    x = 54,939.77

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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.