Home / 57,869.08-86,810.59-20,421.42

Finding the Fourth Proportional to 57,869.08, 86,810.59 and 20,421.42

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Solution

The fourth proportional to 57,869.08, 86,810.59 and 20,421.42 is: 30,634.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,869.08 : 86,810.59 = 20,421.42 : x
  2. Step 2: Convert to fraction form
    57,869.08/86,810.59 = 20,421.42/x
  3. Step 3: Cross multiply
    57,869.08x = 86,810.59 × 20,421.42
  4. Step 4: Simplify right side
    57,869.08x = 1,772,795,103.95
  5. Step 5: Solve for x
    x = 1,772,795,103.95/57,869.08
  6. Step 6: Final answer
    x = 30,634.58

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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.