Home / 56,829.90-85,226.12-18,870.42

Finding the Fourth Proportional to 56,829.90, 85,226.12 and 18,870.42

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Solution

The fourth proportional to 56,829.90, 85,226.12 and 18,870.42 is: 28,299.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,829.90 : 85,226.12 = 18,870.42 : x
  2. Step 2: Convert to fraction form
    56,829.90/85,226.12 = 18,870.42/x
  3. Step 3: Cross multiply
    56,829.90x = 85,226.12 × 18,870.42
  4. Step 4: Simplify right side
    56,829.90x = 1,608,252,679.37
  5. Step 5: Solve for x
    x = 1,608,252,679.37/56,829.90
  6. Step 6: Final answer
    x = 28,299.41

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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.