Home / 52,404.90-78,639.75-21,240.42

Finding the Fourth Proportional to 52,404.90, 78,639.75 and 21,240.42

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Solution

The fourth proportional to 52,404.90, 78,639.75 and 21,240.42 is: 31,873.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,404.90 : 78,639.75 = 21,240.42 : x
  2. Step 2: Convert to fraction form
    52,404.90/78,639.75 = 21,240.42/x
  3. Step 3: Cross multiply
    52,404.90x = 78,639.75 × 21,240.42
  4. Step 4: Simplify right side
    52,404.90x = 1,670,341,318.70
  5. Step 5: Solve for x
    x = 1,670,341,318.70/52,404.90
  6. Step 6: Final answer
    x = 31,873.76

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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.