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Finding the Fourth Proportional to 67,659.19, 101,501.54 and 20,901.13

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Solution

The fourth proportional to 67,659.19, 101,501.54 and 20,901.13 is: 31,355.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,659.19 : 101,501.54 = 20,901.13 : x
  2. Step 2: Convert to fraction form
    67,659.19/101,501.54 = 20,901.13/x
  3. Step 3: Cross multiply
    67,659.19x = 101,501.54 × 20,901.13
  4. Step 4: Simplify right side
    67,659.19x = 2,121,496,882.74
  5. Step 5: Solve for x
    x = 2,121,496,882.74/67,659.19
  6. Step 6: Final answer
    x = 31,355.64

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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.