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Finding the Fourth Proportional to 68,384, 94,358.52 and 45,686.60

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Solution

The fourth proportional to 68,384, 94,358.52 and 45,686.60 is: 63,039.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,384 : 94,358.52 = 45,686.60 : x
  2. Step 2: Convert to fraction form
    68,384/94,358.52 = 45,686.60/x
  3. Step 3: Cross multiply
    68,384x = 94,358.52 × 45,686.60
  4. Step 4: Simplify right side
    68,384x = 4,310,919,959.83
  5. Step 5: Solve for x
    x = 4,310,919,959.83/68,384
  6. Step 6: Final answer
    x = 63,039.89

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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.