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Finding the Fourth Proportional to 79,264.64, 118,945.26 and 31,870.84

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Solution

The fourth proportional to 79,264.64, 118,945.26 and 31,870.84 is: 47,825.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,264.64 : 118,945.26 = 31,870.84 : x
  2. Step 2: Convert to fraction form
    79,264.64/118,945.26 = 31,870.84/x
  3. Step 3: Cross multiply
    79,264.64x = 118,945.26 × 31,870.84
  4. Step 4: Simplify right side
    79,264.64x = 3,790,885,350.22
  5. Step 5: Solve for x
    x = 3,790,885,350.22/79,264.64
  6. Step 6: Final answer
    x = 47,825.68

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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.