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Finding the Fourth Proportional to 81,536.63, 112,520.75 and 47,568.47

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Solution

The fourth proportional to 81,536.63, 112,520.75 and 47,568.47 is: 65,644.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,536.63 : 112,520.75 = 47,568.47 : x
  2. Step 2: Convert to fraction form
    81,536.63/112,520.75 = 47,568.47/x
  3. Step 3: Cross multiply
    81,536.63x = 112,520.75 × 47,568.47
  4. Step 4: Simplify right side
    81,536.63x = 5,352,439,120.31
  5. Step 5: Solve for x
    x = 5,352,439,120.31/81,536.63
  6. Step 6: Final answer
    x = 65,644.60

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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.