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Finding the Fourth Proportional to 115,416.60, 172,995.30 and 48,845.40

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Solution

The fourth proportional to 115,416.60, 172,995.30 and 48,845.40 is: 73,213.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,416.60 : 172,995.30 = 48,845.40 : x
  2. Step 2: Convert to fraction form
    115,416.60/172,995.30 = 48,845.40/x
  3. Step 3: Cross multiply
    115,416.60x = 172,995.30 × 48,845.40
  4. Step 4: Simplify right side
    115,416.60x = 8,450,024,626.62
  5. Step 5: Solve for x
    x = 8,450,024,626.62/115,416.60
  6. Step 6: Final answer
    x = 73,213.25

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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.