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Finding the Fourth Proportional to 79,683.95, 109,964.18 and 47,853.38

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Solution

The fourth proportional to 79,683.95, 109,964.18 and 47,853.38 is: 66,037.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,683.95 : 109,964.18 = 47,853.38 : x
  2. Step 2: Convert to fraction form
    79,683.95/109,964.18 = 47,853.38/x
  3. Step 3: Cross multiply
    79,683.95x = 109,964.18 × 47,853.38
  4. Step 4: Simplify right side
    79,683.95x = 5,262,158,086.47
  5. Step 5: Solve for x
    x = 5,262,158,086.47/79,683.95
  6. Step 6: Final answer
    x = 66,037.86

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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.