Home / 65,971.62-98,975.82-21,601.20

Finding the Fourth Proportional to 65,971.62, 98,975.82 and 21,601.20

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Solution

The fourth proportional to 65,971.62, 98,975.82 and 21,601.20 is: 32,407.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,971.62 : 98,975.82 = 21,601.20 : x
  2. Step 2: Convert to fraction form
    65,971.62/98,975.82 = 21,601.20/x
  3. Step 3: Cross multiply
    65,971.62x = 98,975.82 × 21,601.20
  4. Step 4: Simplify right side
    65,971.62x = 2,137,996,482.98
  5. Step 5: Solve for x
    x = 2,137,996,482.98/65,971.62
  6. Step 6: Final answer
    x = 32,407.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.