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Finding the Fourth Proportional to 70,160.19, 105,286.41 and 25,787.31

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Solution

The fourth proportional to 70,160.19, 105,286.41 and 25,787.31 is: 38,697.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,160.19 : 105,286.41 = 25,787.31 : x
  2. Step 2: Convert to fraction form
    70,160.19/105,286.41 = 25,787.31/x
  3. Step 3: Cross multiply
    70,160.19x = 105,286.41 × 25,787.31
  4. Step 4: Simplify right side
    70,160.19x = 2,715,053,293.46
  5. Step 5: Solve for x
    x = 2,715,053,293.46/70,160.19
  6. Step 6: Final answer
    x = 38,697.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.