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Finding the Fourth Proportional to 68,330.75, 94,281.19 and 39,655.22

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Solution

The fourth proportional to 68,330.75, 94,281.19 and 39,655.22 is: 54,715.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,330.75 : 94,281.19 = 39,655.22 : x
  2. Step 2: Convert to fraction form
    68,330.75/94,281.19 = 39,655.22/x
  3. Step 3: Cross multiply
    68,330.75x = 94,281.19 × 39,655.22
  4. Step 4: Simplify right side
    68,330.75x = 3,738,740,760.77
  5. Step 5: Solve for x
    x = 3,738,740,760.77/68,330.75
  6. Step 6: Final answer
    x = 54,715.35

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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.