Home / 57,815.72-86,730.54-20,368.06

Finding the Fourth Proportional to 57,815.72, 86,730.54 and 20,368.06

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Solution

The fourth proportional to 57,815.72, 86,730.54 and 20,368.06 is: 30,554.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,815.72 : 86,730.54 = 20,368.06 : x
  2. Step 2: Convert to fraction form
    57,815.72/86,730.54 = 20,368.06/x
  3. Step 3: Cross multiply
    57,815.72x = 86,730.54 × 20,368.06
  4. Step 4: Simplify right side
    57,815.72x = 1,766,532,842.55
  5. Step 5: Solve for x
    x = 1,766,532,842.55/57,815.72
  6. Step 6: Final answer
    x = 30,554.54

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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.