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Finding the Fourth Proportional to 83,493.44, 115,228.92 and 47,688.80

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Solution

The fourth proportional to 83,493.44, 115,228.92 and 47,688.80 is: 65,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,493.44 : 115,228.92 = 47,688.80 : x
  2. Step 2: Convert to fraction form
    83,493.44/115,228.92 = 47,688.80/x
  3. Step 3: Cross multiply
    83,493.44x = 115,228.92 × 47,688.80
  4. Step 4: Simplify right side
    83,493.44x = 5,495,128,920.10
  5. Step 5: Solve for x
    x = 5,495,128,920.10/83,493.44
  6. Step 6: Final answer
    x = 65,815.10

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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.