Home / 68,005.40-93,820.56-39,319.80

Finding the Fourth Proportional to 68,005.40, 93,820.56 and 39,319.80

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Solution

The fourth proportional to 68,005.40, 93,820.56 and 39,319.80 is: 54,245.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,005.40 : 93,820.56 = 39,319.80 : x
  2. Step 2: Convert to fraction form
    68,005.40/93,820.56 = 39,319.80/x
  3. Step 3: Cross multiply
    68,005.40x = 93,820.56 × 39,319.80
  4. Step 4: Simplify right side
    68,005.40x = 3,689,005,655.09
  5. Step 5: Solve for x
    x = 3,689,005,655.09/68,005.40
  6. Step 6: Final answer
    x = 54,245.78

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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.