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Finding the Fourth Proportional to 81,269.66, 112,106.99 and 47,274.32

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Solution

The fourth proportional to 81,269.66, 112,106.99 and 47,274.32 is: 65,212.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,269.66 : 112,106.99 = 47,274.32 : x
  2. Step 2: Convert to fraction form
    81,269.66/112,106.99 = 47,274.32/x
  3. Step 3: Cross multiply
    81,269.66x = 112,106.99 × 47,274.32
  4. Step 4: Simplify right side
    81,269.66x = 5,299,780,922.59
  5. Step 5: Solve for x
    x = 5,299,780,922.59/81,269.66
  6. Step 6: Final answer
    x = 65,212.30

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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.