Home / 71,130.29-98,161.79-39,301.25

Finding the Fourth Proportional to 71,130.29, 98,161.79 and 39,301.25

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Solution

The fourth proportional to 71,130.29, 98,161.79 and 39,301.25 is: 54,236.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,130.29 : 98,161.79 = 39,301.25 : x
  2. Step 2: Convert to fraction form
    71,130.29/98,161.79 = 39,301.25/x
  3. Step 3: Cross multiply
    71,130.29x = 98,161.79 × 39,301.25
  4. Step 4: Simplify right side
    71,130.29x = 3,857,880,361.92
  5. Step 5: Solve for x
    x = 3,857,880,361.92/71,130.29
  6. Step 6: Final answer
    x = 54,236.82

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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.