Home / 71,220.36-98,283.60-39,388.08

Finding the Fourth Proportional to 71,220.36, 98,283.60 and 39,388.08

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Solution

The fourth proportional to 71,220.36, 98,283.60 and 39,388.08 is: 54,355.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,220.36 : 98,283.60 = 39,388.08 : x
  2. Step 2: Convert to fraction form
    71,220.36/98,283.60 = 39,388.08/x
  3. Step 3: Cross multiply
    71,220.36x = 98,283.60 × 39,388.08
  4. Step 4: Simplify right side
    71,220.36x = 3,871,202,299.49
  5. Step 5: Solve for x
    x = 3,871,202,299.49/71,220.36
  6. Step 6: Final answer
    x = 54,355.28

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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.