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Finding the Fourth Proportional to 72,088.99, 108,128.01 and 19,497.11

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Solution

The fourth proportional to 72,088.99, 108,128.01 and 19,497.11 is: 29,244.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,088.99 : 108,128.01 = 19,497.11 : x
  2. Step 2: Convert to fraction form
    72,088.99/108,128.01 = 19,497.11/x
  3. Step 3: Cross multiply
    72,088.99x = 108,128.01 × 19,497.11
  4. Step 4: Simplify right side
    72,088.99x = 2,108,183,237.53
  5. Step 5: Solve for x
    x = 2,108,183,237.53/72,088.99
  6. Step 6: Final answer
    x = 29,244.18

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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.