Home / 68,781.69-94,915.40-38,570.31

Finding the Fourth Proportional to 68,781.69, 94,915.40 and 38,570.31

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Solution

The fourth proportional to 68,781.69, 94,915.40 and 38,570.31 is: 53,225.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,781.69 : 94,915.40 = 38,570.31 : x
  2. Step 2: Convert to fraction form
    68,781.69/94,915.40 = 38,570.31/x
  3. Step 3: Cross multiply
    68,781.69x = 94,915.40 × 38,570.31
  4. Step 4: Simplify right side
    68,781.69x = 3,660,916,208.92
  5. Step 5: Solve for x
    x = 3,660,916,208.92/68,781.69
  6. Step 6: Final answer
    x = 53,225.16

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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.