Home / 47,355.20-71,138.40-39,579.20

Finding the Fourth Proportional to 47,355.20, 71,138.40 and 39,579.20

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Solution

The fourth proportional to 47,355.20, 71,138.40 and 39,579.20 is: 59,457.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,355.20 : 71,138.40 = 39,579.20 : x
  2. Step 2: Convert to fraction form
    47,355.20/71,138.40 = 39,579.20/x
  3. Step 3: Cross multiply
    47,355.20x = 71,138.40 × 39,579.20
  4. Step 4: Simplify right side
    47,355.20x = 2,815,600,961.28
  5. Step 5: Solve for x
    x = 2,815,600,961.28/47,355.20
  6. Step 6: Final answer
    x = 59,457.06

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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.