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Finding the Fourth Proportional to 68,386.88, 94,389.64 and 40,101.68

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Solution

The fourth proportional to 68,386.88, 94,389.64 and 40,101.68 is: 55,349.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,386.88 : 94,389.64 = 40,101.68 : x
  2. Step 2: Convert to fraction form
    68,386.88/94,389.64 = 40,101.68/x
  3. Step 3: Cross multiply
    68,386.88x = 94,389.64 × 40,101.68
  4. Step 4: Simplify right side
    68,386.88x = 3,785,182,466.14
  5. Step 5: Solve for x
    x = 3,785,182,466.14/68,386.88
  6. Step 6: Final answer
    x = 55,349.55

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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.