Home / 77,421.28-116,132.07-21,262.12

Finding the Fourth Proportional to 77,421.28, 116,132.07 and 21,262.12

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Solution

The fourth proportional to 77,421.28, 116,132.07 and 21,262.12 is: 31,893.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,421.28 : 116,132.07 = 21,262.12 : x
  2. Step 2: Convert to fraction form
    77,421.28/116,132.07 = 21,262.12/x
  3. Step 3: Cross multiply
    77,421.28x = 116,132.07 × 21,262.12
  4. Step 4: Simplify right side
    77,421.28x = 2,469,214,008.19
  5. Step 5: Solve for x
    x = 2,469,214,008.19/77,421.28
  6. Step 6: Final answer
    x = 31,893.22

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1.5x scale

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.