Home / 47,815.40-71,731.79-19,719.84

Finding the Fourth Proportional to 47,815.40, 71,731.79 and 19,719.84

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Solution

The fourth proportional to 47,815.40, 71,731.79 and 19,719.84 is: 29,583.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,815.40 : 71,731.79 = 19,719.84 : x
  2. Step 2: Convert to fraction form
    47,815.40/71,731.79 = 19,719.84/x
  3. Step 3: Cross multiply
    47,815.40x = 71,731.79 × 19,719.84
  4. Step 4: Simplify right side
    47,815.40x = 1,414,539,421.71
  5. Step 5: Solve for x
    x = 1,414,539,421.71/47,815.40
  6. Step 6: Final answer
    x = 29,583.34

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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.