Home / 71,007.20-97,990.25-39,177.03

Finding the Fourth Proportional to 71,007.20, 97,990.25 and 39,177.03

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Solution

The fourth proportional to 71,007.20, 97,990.25 and 39,177.03 is: 54,064.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,007.20 : 97,990.25 = 39,177.03 : x
  2. Step 2: Convert to fraction form
    71,007.20/97,990.25 = 39,177.03/x
  3. Step 3: Cross multiply
    71,007.20x = 97,990.25 × 39,177.03
  4. Step 4: Simplify right side
    71,007.20x = 3,838,966,963.96
  5. Step 5: Solve for x
    x = 3,838,966,963.96/71,007.20
  6. Step 6: Final answer
    x = 54,064.47

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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.