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Finding the Fourth Proportional to 70,532.52, 105,772.08 and 28,398.24

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Solution

The fourth proportional to 70,532.52, 105,772.08 and 28,398.24 is: 42,586.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,532.52 : 105,772.08 = 28,398.24 : x
  2. Step 2: Convert to fraction form
    70,532.52/105,772.08 = 28,398.24/x
  3. Step 3: Cross multiply
    70,532.52x = 105,772.08 × 28,398.24
  4. Step 4: Simplify right side
    70,532.52x = 3,003,740,913.14
  5. Step 5: Solve for x
    x = 3,003,740,913.14/70,532.52
  6. Step 6: Final answer
    x = 42,586.61

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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.