Home / 47,288.60-70,943.44-20,638.90

Finding the Fourth Proportional to 47,288.60, 70,943.44 and 20,638.90

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Solution

The fourth proportional to 47,288.60, 70,943.44 and 20,638.90 is: 30,962.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,288.60 : 70,943.44 = 20,638.90 : x
  2. Step 2: Convert to fraction form
    47,288.60/70,943.44 = 20,638.90/x
  3. Step 3: Cross multiply
    47,288.60x = 70,943.44 × 20,638.90
  4. Step 4: Simplify right side
    47,288.60x = 1,464,194,563.82
  5. Step 5: Solve for x
    x = 1,464,194,563.82/47,288.60
  6. Step 6: Final answer
    x = 30,962.95

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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.