Home / 57,929.56-79,981.50-39,059.80

Finding the Fourth Proportional to 57,929.56, 79,981.50 and 39,059.80

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Solution

The fourth proportional to 57,929.56, 79,981.50 and 39,059.80 is: 53,928.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,929.56 : 79,981.50 = 39,059.80 : x
  2. Step 2: Convert to fraction form
    57,929.56/79,981.50 = 39,059.80/x
  3. Step 3: Cross multiply
    57,929.56x = 79,981.50 × 39,059.80
  4. Step 4: Simplify right side
    57,929.56x = 3,124,061,393.70
  5. Step 5: Solve for x
    x = 3,124,061,393.70/57,929.56
  6. Step 6: Final answer
    x = 53,928.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.