Home / 47,215.78-70,823.70-45,165.80

Finding the Fourth Proportional to 47,215.78, 70,823.70 and 45,165.80

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Solution

The fourth proportional to 47,215.78, 70,823.70 and 45,165.80 is: 67,748.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,215.78 : 70,823.70 = 45,165.80 : x
  2. Step 2: Convert to fraction form
    47,215.78/70,823.70 = 45,165.80/x
  3. Step 3: Cross multiply
    47,215.78x = 70,823.70 × 45,165.80
  4. Step 4: Simplify right side
    47,215.78x = 3,198,809,246.52
  5. Step 5: Solve for x
    x = 3,198,809,246.52/47,215.78
  6. Step 6: Final answer
    x = 67,748.74

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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.