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Finding the Fourth Proportional to 68,777.84, 94,918 and 38,565.12

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Solution

The fourth proportional to 68,777.84, 94,918 and 38,565.12 is: 53,222.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,777.84 : 94,918 = 38,565.12 : x
  2. Step 2: Convert to fraction form
    68,777.84/94,918 = 38,565.12/x
  3. Step 3: Cross multiply
    68,777.84x = 94,918 × 38,565.12
  4. Step 4: Simplify right side
    68,777.84x = 3,660,524,060.16
  5. Step 5: Solve for x
    x = 3,660,524,060.16/68,777.84
  6. Step 6: Final answer
    x = 53,222.43

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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.