Home / 71,213.08-98,271.62-39,381.88

Finding the Fourth Proportional to 71,213.08, 98,271.62 and 39,381.88

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Solution

The fourth proportional to 71,213.08, 98,271.62 and 39,381.88 is: 54,345.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,213.08 : 98,271.62 = 39,381.88 : x
  2. Step 2: Convert to fraction form
    71,213.08/98,271.62 = 39,381.88/x
  3. Step 3: Cross multiply
    71,213.08x = 98,271.62 × 39,381.88
  4. Step 4: Simplify right side
    71,213.08x = 3,870,121,146.25
  5. Step 5: Solve for x
    x = 3,870,121,146.25/71,213.08
  6. Step 6: Final answer
    x = 54,345.65

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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.