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Finding the Fourth Proportional to 68,509.91, 94,555.71 and 39,838.45

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Solution

The fourth proportional to 68,509.91, 94,555.71 and 39,838.45 is: 54,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,509.91 : 94,555.71 = 39,838.45 : x
  2. Step 2: Convert to fraction form
    68,509.91/94,555.71 = 39,838.45/x
  3. Step 3: Cross multiply
    68,509.91x = 94,555.71 × 39,838.45
  4. Step 4: Simplify right side
    68,509.91x = 3,766,952,452.27
  5. Step 5: Solve for x
    x = 3,766,952,452.27/68,509.91
  6. Step 6: Final answer
    x = 54,984.05

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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.