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Finding the Fourth Proportional to 79,695.49, 109,980.09 and 47,864.92

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Solution

The fourth proportional to 79,695.49, 109,980.09 and 47,864.92 is: 66,053.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,695.49 : 109,980.09 = 47,864.92 : x
  2. Step 2: Convert to fraction form
    79,695.49/109,980.09 = 47,864.92/x
  3. Step 3: Cross multiply
    79,695.49x = 109,980.09 × 47,864.92
  4. Step 4: Simplify right side
    79,695.49x = 5,264,188,209.44
  5. Step 5: Solve for x
    x = 5,264,188,209.44/79,695.49
  6. Step 6: Final answer
    x = 66,053.78

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1.5x scale

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.