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Finding the Fourth Proportional to 81,753.42, 112,800.02 and 47,742.60

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Solution

The fourth proportional to 81,753.42, 112,800.02 and 47,742.60 is: 65,873.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,753.42 : 112,800.02 = 47,742.60 : x
  2. Step 2: Convert to fraction form
    81,753.42/112,800.02 = 47,742.60/x
  3. Step 3: Cross multiply
    81,753.42x = 112,800.02 × 47,742.60
  4. Step 4: Simplify right side
    81,753.42x = 5,385,365,996.14
  5. Step 5: Solve for x
    x = 5,385,365,996.14/81,753.42
  6. Step 6: Final answer
    x = 65,873.28

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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.