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Finding the Fourth Proportional to 72,027.19, 108,038.04 and 19,438.04

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Solution

The fourth proportional to 72,027.19, 108,038.04 and 19,438.04 is: 29,156.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,027.19 : 108,038.04 = 19,438.04 : x
  2. Step 2: Convert to fraction form
    72,027.19/108,038.04 = 19,438.04/x
  3. Step 3: Cross multiply
    72,027.19x = 108,038.04 × 19,438.04
  4. Step 4: Simplify right side
    72,027.19x = 2,100,047,940.24
  5. Step 5: Solve for x
    x = 2,100,047,940.24/72,027.19
  6. Step 6: Final answer
    x = 29,156.32

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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.