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Finding the Fourth Proportional to 84,673.90, 126,965.48 and 28,495.34

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Solution

The fourth proportional to 84,673.90, 126,965.48 and 28,495.34 is: 42,727.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,673.90 : 126,965.48 = 28,495.34 : x
  2. Step 2: Convert to fraction form
    84,673.90/126,965.48 = 28,495.34/x
  3. Step 3: Cross multiply
    84,673.90x = 126,965.48 × 28,495.34
  4. Step 4: Simplify right side
    84,673.90x = 3,617,924,520.86
  5. Step 5: Solve for x
    x = 3,617,924,520.86/84,673.90
  6. Step 6: Final answer
    x = 42,727.74

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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.