Home / 47,920.95-71,915.45-21,647.79

Finding the Fourth Proportional to 47,920.95, 71,915.45 and 21,647.79

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Solution

The fourth proportional to 47,920.95, 71,915.45 and 21,647.79 is: 32,487.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,920.95 : 71,915.45 = 21,647.79 : x
  2. Step 2: Convert to fraction form
    47,920.95/71,915.45 = 21,647.79/x
  3. Step 3: Cross multiply
    47,920.95x = 71,915.45 × 21,647.79
  4. Step 4: Simplify right side
    47,920.95x = 1,556,810,451.12
  5. Step 5: Solve for x
    x = 1,556,810,451.12/47,920.95
  6. Step 6: Final answer
    x = 32,487.05

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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.