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Finding the Fourth Proportional to 84,571.80, 126,811.62 and 43,053.72

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Solution

The fourth proportional to 84,571.80, 126,811.62 and 43,053.72 is: 64,557.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,571.80 : 126,811.62 = 43,053.72 : x
  2. Step 2: Convert to fraction form
    84,571.80/126,811.62 = 43,053.72/x
  3. Step 3: Cross multiply
    84,571.80x = 126,811.62 × 43,053.72
  4. Step 4: Simplify right side
    84,571.80x = 5,459,711,980.23
  5. Step 5: Solve for x
    x = 5,459,711,980.23/84,571.80
  6. Step 6: Final answer
    x = 64,557.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.