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Finding the Fourth Proportional to 84,573.80, 126,814.62 and 43,055.72

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Solution

The fourth proportional to 84,573.80, 126,814.62 and 43,055.72 is: 64,560.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,573.80 : 126,814.62 = 43,055.72 : x
  2. Step 2: Convert to fraction form
    84,573.80/126,814.62 = 43,055.72/x
  3. Step 3: Cross multiply
    84,573.80x = 126,814.62 × 43,055.72
  4. Step 4: Simplify right side
    84,573.80x = 5,460,094,770.63
  5. Step 5: Solve for x
    x = 5,460,094,770.63/84,573.80
  6. Step 6: Final answer
    x = 64,560.12

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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.