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Finding the Fourth Proportional to 70,546.53, 105,818.62 and 28,425.58

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Solution

The fourth proportional to 70,546.53, 105,818.62 and 28,425.58 is: 42,637.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,546.53 : 105,818.62 = 28,425.58 : x
  2. Step 2: Convert to fraction form
    70,546.53/105,818.62 = 28,425.58/x
  3. Step 3: Cross multiply
    70,546.53x = 105,818.62 × 28,425.58
  4. Step 4: Simplify right side
    70,546.53x = 3,007,955,648.30
  5. Step 5: Solve for x
    x = 3,007,955,648.30/70,546.53
  6. Step 6: Final answer
    x = 42,637.90

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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.