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Finding the Fourth Proportional to 172,941.75, 259,420.41 and 52,989.93

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Solution

The fourth proportional to 172,941.75, 259,420.41 and 52,989.93 is: 79,487.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,941.75 : 259,420.41 = 52,989.93 : x
  2. Step 2: Convert to fraction form
    172,941.75/259,420.41 = 52,989.93/x
  3. Step 3: Cross multiply
    172,941.75x = 259,420.41 × 52,989.93
  4. Step 4: Simplify right side
    172,941.75x = 13,746,669,366.47
  5. Step 5: Solve for x
    x = 13,746,669,366.47/172,941.75
  6. Step 6: Final answer
    x = 79,487.28

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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.