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Finding the Fourth Proportional to 70,103.96, 105,147.30 and 28,551.32

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Solution

The fourth proportional to 70,103.96, 105,147.30 and 28,551.32 is: 42,823.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,103.96 : 105,147.30 = 28,551.32 : x
  2. Step 2: Convert to fraction form
    70,103.96/105,147.30 = 28,551.32/x
  3. Step 3: Cross multiply
    70,103.96x = 105,147.30 × 28,551.32
  4. Step 4: Simplify right side
    70,103.96x = 3,002,094,209.44
  5. Step 5: Solve for x
    x = 3,002,094,209.44/70,103.96
  6. Step 6: Final answer
    x = 42,823.46

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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.