Home / 71,221.09-98,283.42-39,389.32

Finding the Fourth Proportional to 71,221.09, 98,283.42 and 39,389.32

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Solution

The fourth proportional to 71,221.09, 98,283.42 and 39,389.32 is: 54,356.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,221.09 : 98,283.42 = 39,389.32 : x
  2. Step 2: Convert to fraction form
    71,221.09/98,283.42 = 39,389.32/x
  3. Step 3: Cross multiply
    71,221.09x = 98,283.42 × 39,389.32
  4. Step 4: Simplify right side
    71,221.09x = 3,871,317,081.07
  5. Step 5: Solve for x
    x = 3,871,317,081.07/71,221.09
  6. Step 6: Final answer
    x = 54,356.33

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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.