Home / 65,107.08-97,670.34-20,720.70

Finding the Fourth Proportional to 65,107.08, 97,670.34 and 20,720.70

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Solution

The fourth proportional to 65,107.08, 97,670.34 and 20,720.70 is: 31,084.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,107.08 : 97,670.34 = 20,720.70 : x
  2. Step 2: Convert to fraction form
    65,107.08/97,670.34 = 20,720.70/x
  3. Step 3: Cross multiply
    65,107.08x = 97,670.34 × 20,720.70
  4. Step 4: Simplify right side
    65,107.08x = 2,023,797,814.04
  5. Step 5: Solve for x
    x = 2,023,797,814.04/65,107.08
  6. Step 6: Final answer
    x = 31,084.14

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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.