Home / 74,319.60-111,483.18-21,015.42

Finding the Fourth Proportional to 74,319.60, 111,483.18 and 21,015.42

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Solution

The fourth proportional to 74,319.60, 111,483.18 and 21,015.42 is: 31,524.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,319.60 : 111,483.18 = 21,015.42 : x
  2. Step 2: Convert to fraction form
    74,319.60/111,483.18 = 21,015.42/x
  3. Step 3: Cross multiply
    74,319.60x = 111,483.18 × 21,015.42
  4. Step 4: Simplify right side
    74,319.60x = 2,342,865,850.64
  5. Step 5: Solve for x
    x = 2,342,865,850.64/74,319.60
  6. Step 6: Final answer
    x = 31,524.20

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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.