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Finding the Fourth Proportional to 68,903.66, 95,086.71 and 38,689.45

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Solution

The fourth proportional to 68,903.66, 95,086.71 and 38,689.45 is: 53,391.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,903.66 : 95,086.71 = 38,689.45 : x
  2. Step 2: Convert to fraction form
    68,903.66/95,086.71 = 38,689.45/x
  3. Step 3: Cross multiply
    68,903.66x = 95,086.71 × 38,689.45
  4. Step 4: Simplify right side
    68,903.66x = 3,678,852,274.49
  5. Step 5: Solve for x
    x = 3,678,852,274.49/68,903.66
  6. Step 6: Final answer
    x = 53,391.24

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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.