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Finding the Fourth Proportional to 72,130.59, 108,187.52 and 19,544.04

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Solution

The fourth proportional to 72,130.59, 108,187.52 and 19,544.04 is: 29,313.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,130.59 : 108,187.52 = 19,544.04 : x
  2. Step 2: Convert to fraction form
    72,130.59/108,187.52 = 19,544.04/x
  3. Step 3: Cross multiply
    72,130.59x = 108,187.52 × 19,544.04
  4. Step 4: Simplify right side
    72,130.59x = 2,114,421,120.66
  5. Step 5: Solve for x
    x = 2,114,421,120.66/72,130.59
  6. Step 6: Final answer
    x = 29,313.79

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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.