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Finding the Fourth Proportional to 67,945.59, 101,918.39 and 21,202.11

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Solution

The fourth proportional to 67,945.59, 101,918.39 and 21,202.11 is: 31,803.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,945.59 : 101,918.39 = 21,202.11 : x
  2. Step 2: Convert to fraction form
    67,945.59/101,918.39 = 21,202.11/x
  3. Step 3: Cross multiply
    67,945.59x = 101,918.39 × 21,202.11
  4. Step 4: Simplify right side
    67,945.59x = 2,160,884,809.79
  5. Step 5: Solve for x
    x = 2,160,884,809.79/67,945.59
  6. Step 6: Final answer
    x = 31,803.17

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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.