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Finding the Fourth Proportional to 70,011, 105,065.14 and 28,458.04

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Solution

The fourth proportional to 70,011, 105,065.14 and 28,458.04 is: 42,706.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,011 : 105,065.14 = 28,458.04 : x
  2. Step 2: Convert to fraction form
    70,011/105,065.14 = 28,458.04/x
  3. Step 3: Cross multiply
    70,011x = 105,065.14 × 28,458.04
  4. Step 4: Simplify right side
    70,011x = 2,989,947,956.73
  5. Step 5: Solve for x
    x = 2,989,947,956.73/70,011
  6. Step 6: Final answer
    x = 42,706.83

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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.