Home / 68,780.34-94,899.60-40,480.56

Finding the Fourth Proportional to 68,780.34, 94,899.60 and 40,480.56

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Solution

The fourth proportional to 68,780.34, 94,899.60 and 40,480.56 is: 55,853.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,780.34 : 94,899.60 = 40,480.56 : x
  2. Step 2: Convert to fraction form
    68,780.34/94,899.60 = 40,480.56/x
  3. Step 3: Cross multiply
    68,780.34x = 94,899.60 × 40,480.56
  4. Step 4: Simplify right side
    68,780.34x = 3,841,588,951.78
  5. Step 5: Solve for x
    x = 3,841,588,951.78/68,780.34
  6. Step 6: Final answer
    x = 55,853.01

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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.