Home / 78,513.42-117,753.48-25,910.40

Finding the Fourth Proportional to 78,513.42, 117,753.48 and 25,910.40

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Solution

The fourth proportional to 78,513.42, 117,753.48 and 25,910.40 is: 38,860.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,513.42 : 117,753.48 = 25,910.40 : x
  2. Step 2: Convert to fraction form
    78,513.42/117,753.48 = 25,910.40/x
  3. Step 3: Cross multiply
    78,513.42x = 117,753.48 × 25,910.40
  4. Step 4: Simplify right side
    78,513.42x = 3,051,039,768.19
  5. Step 5: Solve for x
    x = 3,051,039,768.19/78,513.42
  6. Step 6: Final answer
    x = 38,860.11

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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.