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Finding the Fourth Proportional to 68,502.58, 94,472.12 and 57,055.50

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Solution

The fourth proportional to 68,502.58, 94,472.12 and 57,055.50 is: 78,685.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,502.58 : 94,472.12 = 57,055.50 : x
  2. Step 2: Convert to fraction form
    68,502.58/94,472.12 = 57,055.50/x
  3. Step 3: Cross multiply
    68,502.58x = 94,472.12 × 57,055.50
  4. Step 4: Simplify right side
    68,502.58x = 5,390,154,185.30
  5. Step 5: Solve for x
    x = 5,390,154,185.30/68,502.58
  6. Step 6: Final answer
    x = 78,685.42

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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.