Home / 52,221.20-78,216.60-31,408.40

Finding the Fourth Proportional to 52,221.20, 78,216.60 and 31,408.40

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Solution

The fourth proportional to 52,221.20, 78,216.60 and 31,408.40 is: 47,043.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,221.20 : 78,216.60 = 31,408.40 : x
  2. Step 2: Convert to fraction form
    52,221.20/78,216.60 = 31,408.40/x
  3. Step 3: Cross multiply
    52,221.20x = 78,216.60 × 31,408.40
  4. Step 4: Simplify right side
    52,221.20x = 2,456,658,259.44
  5. Step 5: Solve for x
    x = 2,456,658,259.44/52,221.20
  6. Step 6: Final answer
    x = 47,043.31

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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.