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Finding the Fourth Proportional to 29,145.60, 43,696.80 and 19,762.20

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Solution

The fourth proportional to 29,145.60, 43,696.80 and 19,762.20 is: 29,628.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,145.60 : 43,696.80 = 19,762.20 : x
  2. Step 2: Convert to fraction form
    29,145.60/43,696.80 = 19,762.20/x
  3. Step 3: Cross multiply
    29,145.60x = 43,696.80 × 19,762.20
  4. Step 4: Simplify right side
    29,145.60x = 863,544,900.96
  5. Step 5: Solve for x
    x = 863,544,900.96/29,145.60
  6. Step 6: Final answer
    x = 29,628.65

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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.