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Finding the Fourth Proportional to 68,855.52, 94,998.96 and 38,636.40

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Solution

The fourth proportional to 68,855.52, 94,998.96 and 38,636.40 is: 53,306.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,855.52 : 94,998.96 = 38,636.40 : x
  2. Step 2: Convert to fraction form
    68,855.52/94,998.96 = 38,636.40/x
  3. Step 3: Cross multiply
    68,855.52x = 94,998.96 × 38,636.40
  4. Step 4: Simplify right side
    68,855.52x = 3,670,417,818.14
  5. Step 5: Solve for x
    x = 3,670,417,818.14/68,855.52
  6. Step 6: Final answer
    x = 53,306.08

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1.5x scale

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.