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Finding the Fourth Proportional to 84,468.88, 126,602.20 and 39,429.64

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Solution

The fourth proportional to 84,468.88, 126,602.20 and 39,429.64 is: 59,097.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,468.88 : 126,602.20 = 39,429.64 : x
  2. Step 2: Convert to fraction form
    84,468.88/126,602.20 = 39,429.64/x
  3. Step 3: Cross multiply
    84,468.88x = 126,602.20 × 39,429.64
  4. Step 4: Simplify right side
    84,468.88x = 4,991,878,339.05
  5. Step 5: Solve for x
    x = 4,991,878,339.05/84,468.88
  6. Step 6: Final answer
    x = 59,097.25

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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.