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Finding the Fourth Proportional to 115,358.40, 172,941.60 and 48,849.60

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Solution

The fourth proportional to 115,358.40, 172,941.60 and 48,849.60 is: 73,233.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,358.40 : 172,941.60 = 48,849.60 : x
  2. Step 2: Convert to fraction form
    115,358.40/172,941.60 = 48,849.60/x
  3. Step 3: Cross multiply
    115,358.40x = 172,941.60 × 48,849.60
  4. Step 4: Simplify right side
    115,358.40x = 8,448,127,983.36
  5. Step 5: Solve for x
    x = 8,448,127,983.36/115,358.40
  6. Step 6: Final answer
    x = 73,233.75

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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.