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Finding the Fourth Proportional to 67,799.52, 101,709.84 and 21,041.28

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Solution

The fourth proportional to 67,799.52, 101,709.84 and 21,041.28 is: 31,565.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,799.52 : 101,709.84 = 21,041.28 : x
  2. Step 2: Convert to fraction form
    67,799.52/101,709.84 = 21,041.28/x
  3. Step 3: Cross multiply
    67,799.52x = 101,709.84 × 21,041.28
  4. Step 4: Simplify right side
    67,799.52x = 2,140,105,222.20
  5. Step 5: Solve for x
    x = 2,140,105,222.20/67,799.52
  6. Step 6: Final answer
    x = 31,565.20

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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.