Home / 57,930.87-86,897.93-20,485.65

Finding the Fourth Proportional to 57,930.87, 86,897.93 and 20,485.65

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Solution

The fourth proportional to 57,930.87, 86,897.93 and 20,485.65 is: 30,729.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,930.87 : 86,897.93 = 20,485.65 : x
  2. Step 2: Convert to fraction form
    57,930.87/86,897.93 = 20,485.65/x
  3. Step 3: Cross multiply
    57,930.87x = 86,897.93 × 20,485.65
  4. Step 4: Simplify right side
    57,930.87x = 1,780,160,477.28
  5. Step 5: Solve for x
    x = 1,780,160,477.28/57,930.87
  6. Step 6: Final answer
    x = 30,729.05

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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.