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Finding the Fourth Proportional to 72,363.96, 108,547.74 and 19,773.90

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Solution

The fourth proportional to 72,363.96, 108,547.74 and 19,773.90 is: 29,661.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,363.96 : 108,547.74 = 19,773.90 : x
  2. Step 2: Convert to fraction form
    72,363.96/108,547.74 = 19,773.90/x
  3. Step 3: Cross multiply
    72,363.96x = 108,547.74 × 19,773.90
  4. Step 4: Simplify right side
    72,363.96x = 2,146,412,155.99
  5. Step 5: Solve for x
    x = 2,146,412,155.99/72,363.96
  6. Step 6: Final answer
    x = 29,661.34

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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.