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Finding the Fourth Proportional to 68,698.25, 94,803.59 and 38,890.25

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Solution

The fourth proportional to 68,698.25, 94,803.59 and 38,890.25 is: 53,668.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,698.25 : 94,803.59 = 38,890.25 : x
  2. Step 2: Convert to fraction form
    68,698.25/94,803.59 = 38,890.25/x
  3. Step 3: Cross multiply
    68,698.25x = 94,803.59 × 38,890.25
  4. Step 4: Simplify right side
    68,698.25x = 3,686,935,121.55
  5. Step 5: Solve for x
    x = 3,686,935,121.55/68,698.25
  6. Step 6: Final answer
    x = 53,668.55

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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.