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Finding the Fourth Proportional to 72,592.51, 108,889.32 and 20,004.88

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Solution

The fourth proportional to 72,592.51, 108,889.32 and 20,004.88 is: 30,007.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,592.51 : 108,889.32 = 20,004.88 : x
  2. Step 2: Convert to fraction form
    72,592.51/108,889.32 = 20,004.88/x
  3. Step 3: Cross multiply
    72,592.51x = 108,889.32 × 20,004.88
  4. Step 4: Simplify right side
    72,592.51x = 2,178,317,779.88
  5. Step 5: Solve for x
    x = 2,178,317,779.88/72,592.51
  6. Step 6: Final answer
    x = 30,007.47

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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.