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Finding the Fourth Proportional to 115,044.60, 172,585.80 and 36,139.80

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Solution

The fourth proportional to 115,044.60, 172,585.80 and 36,139.80 is: 54,215.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,044.60 : 172,585.80 = 36,139.80 : x
  2. Step 2: Convert to fraction form
    115,044.60/172,585.80 = 36,139.80/x
  3. Step 3: Cross multiply
    115,044.60x = 172,585.80 × 36,139.80
  4. Step 4: Simplify right side
    115,044.60x = 6,237,216,294.84
  5. Step 5: Solve for x
    x = 6,237,216,294.84/115,044.60
  6. Step 6: Final answer
    x = 54,215.64

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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.