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Finding the Fourth Proportional to 79,259.66, 109,381.73 and 47,422.43

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Solution

The fourth proportional to 79,259.66, 109,381.73 and 47,422.43 is: 65,444.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,259.66 : 109,381.73 = 47,422.43 : x
  2. Step 2: Convert to fraction form
    79,259.66/109,381.73 = 47,422.43/x
  3. Step 3: Cross multiply
    79,259.66x = 109,381.73 × 47,422.43
  4. Step 4: Simplify right side
    79,259.66x = 5,187,146,650.18
  5. Step 5: Solve for x
    x = 5,187,146,650.18/79,259.66
  6. Step 6: Final answer
    x = 65,444.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.