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Finding the Fourth Proportional to 115,223.40, 172,835.10 and 36,345.60

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Solution

The fourth proportional to 115,223.40, 172,835.10 and 36,345.60 is: 54,518.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,223.40 : 172,835.10 = 36,345.60 : x
  2. Step 2: Convert to fraction form
    115,223.40/172,835.10 = 36,345.60/x
  3. Step 3: Cross multiply
    115,223.40x = 172,835.10 × 36,345.60
  4. Step 4: Simplify right side
    115,223.40x = 6,281,795,410.56
  5. Step 5: Solve for x
    x = 6,281,795,410.56/115,223.40
  6. Step 6: Final answer
    x = 54,518.40

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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.