Home / 70,810.20-97,718.67-38,979.27

Finding the Fourth Proportional to 70,810.20, 97,718.67 and 38,979.27

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Solution

The fourth proportional to 70,810.20, 97,718.67 and 38,979.27 is: 53,791.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,810.20 : 97,718.67 = 38,979.27 : x
  2. Step 2: Convert to fraction form
    70,810.20/97,718.67 = 38,979.27/x
  3. Step 3: Cross multiply
    70,810.20x = 97,718.67 × 38,979.27
  4. Step 4: Simplify right side
    70,810.20x = 3,809,002,421.97
  5. Step 5: Solve for x
    x = 3,809,002,421.97/70,810.20
  6. Step 6: Final answer
    x = 53,791.72

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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.