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Finding the Fourth Proportional to 84,291.55, 126,499.53 and 39,918.22

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Solution

The fourth proportional to 84,291.55, 126,499.53 and 39,918.22 is: 59,906.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,291.55 : 126,499.53 = 39,918.22 : x
  2. Step 2: Convert to fraction form
    84,291.55/126,499.53 = 39,918.22/x
  3. Step 3: Cross multiply
    84,291.55x = 126,499.53 × 39,918.22
  4. Step 4: Simplify right side
    84,291.55x = 5,049,636,068.44
  5. Step 5: Solve for x
    x = 5,049,636,068.44/84,291.55
  6. Step 6: Final answer
    x = 59,906.79

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1.5x scale

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.