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Finding the Fourth Proportional to 143,940.87, 215,864.53 and 47,852.29

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Solution

The fourth proportional to 143,940.87, 215,864.53 and 47,852.29 is: 71,762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,940.87 : 215,864.53 = 47,852.29 : x
  2. Step 2: Convert to fraction form
    143,940.87/215,864.53 = 47,852.29/x
  3. Step 3: Cross multiply
    143,940.87x = 215,864.53 × 47,852.29
  4. Step 4: Simplify right side
    143,940.87x = 10,329,611,851.01
  5. Step 5: Solve for x
    x = 10,329,611,851.01/143,940.87
  6. Step 6: Final answer
    x = 71,762.88

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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.