Home / 68,720.55-94,840.16-38,505.39

Finding the Fourth Proportional to 68,720.55, 94,840.16 and 38,505.39

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Solution

The fourth proportional to 68,720.55, 94,840.16 and 38,505.39 is: 53,140.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,720.55 : 94,840.16 = 38,505.39 : x
  2. Step 2: Convert to fraction form
    68,720.55/94,840.16 = 38,505.39/x
  3. Step 3: Cross multiply
    68,720.55x = 94,840.16 × 38,505.39
  4. Step 4: Simplify right side
    68,720.55x = 3,651,857,155.94
  5. Step 5: Solve for x
    x = 3,651,857,155.94/68,720.55
  6. Step 6: Final answer
    x = 53,140.69

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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.