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Finding the Fourth Proportional to 67,971.92, 93,801.88 and 39,672.08

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Solution

The fourth proportional to 67,971.92, 93,801.88 and 39,672.08 is: 54,747.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,971.92 : 93,801.88 = 39,672.08 : x
  2. Step 2: Convert to fraction form
    67,971.92/93,801.88 = 39,672.08/x
  3. Step 3: Cross multiply
    67,971.92x = 93,801.88 × 39,672.08
  4. Step 4: Simplify right side
    67,971.92x = 3,721,315,687.51
  5. Step 5: Solve for x
    x = 3,721,315,687.51/67,971.92
  6. Step 6: Final answer
    x = 54,747.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.