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Finding the Fourth Proportional to 55,860.90, 83,791.35 and 20,793.30

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Solution

The fourth proportional to 55,860.90, 83,791.35 and 20,793.30 is: 31,189.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,860.90 : 83,791.35 = 20,793.30 : x
  2. Step 2: Convert to fraction form
    55,860.90/83,791.35 = 20,793.30/x
  3. Step 3: Cross multiply
    55,860.90x = 83,791.35 × 20,793.30
  4. Step 4: Simplify right side
    55,860.90x = 1,742,298,677.96
  5. Step 5: Solve for x
    x = 1,742,298,677.96/55,860.90
  6. Step 6: Final answer
    x = 31,189.95

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1.5x scale

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.