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Finding the Fourth Proportional to 70,914.15, 106,415.57 and 28,794.42

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Solution

The fourth proportional to 70,914.15, 106,415.57 and 28,794.42 is: 43,209.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,914.15 : 106,415.57 = 28,794.42 : x
  2. Step 2: Convert to fraction form
    70,914.15/106,415.57 = 28,794.42/x
  3. Step 3: Cross multiply
    70,914.15x = 106,415.57 × 28,794.42
  4. Step 4: Simplify right side
    70,914.15x = 3,064,174,689.11
  5. Step 5: Solve for x
    x = 3,064,174,689.11/70,914.15
  6. Step 6: Final answer
    x = 43,209.64

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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.