Home / 71,220.33-98,285.54-39,391.38

Finding the Fourth Proportional to 71,220.33, 98,285.54 and 39,391.38

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Solution

The fourth proportional to 71,220.33, 98,285.54 and 39,391.38 is: 54,360.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,220.33 : 98,285.54 = 39,391.38 : x
  2. Step 2: Convert to fraction form
    71,220.33/98,285.54 = 39,391.38/x
  3. Step 3: Cross multiply
    71,220.33x = 98,285.54 × 39,391.38
  4. Step 4: Simplify right side
    71,220.33x = 3,871,602,857.69
  5. Step 5: Solve for x
    x = 3,871,602,857.69/71,220.33
  6. Step 6: Final answer
    x = 54,360.92

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1.5x scale

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.