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Finding the Fourth Proportional to 47,278.80, 70,892.60 and 19,579.60

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Solution

The fourth proportional to 47,278.80, 70,892.60 and 19,579.60 is: 29,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,278.80 : 70,892.60 = 19,579.60 : x
  2. Step 2: Convert to fraction form
    47,278.80/70,892.60 = 19,579.60/x
  3. Step 3: Cross multiply
    47,278.80x = 70,892.60 × 19,579.60
  4. Step 4: Simplify right side
    47,278.80x = 1,388,048,750.96
  5. Step 5: Solve for x
    x = 1,388,048,750.96/47,278.80
  6. Step 6: Final answer
    x = 29,358.80

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1.5x scale

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.