Home / 48,468.20-72,702.30-31,879.40

Finding the Fourth Proportional to 48,468.20, 72,702.30 and 31,879.40

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Solution

The fourth proportional to 48,468.20, 72,702.30 and 31,879.40 is: 47,819.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,468.20 : 72,702.30 = 31,879.40 : x
  2. Step 2: Convert to fraction form
    48,468.20/72,702.30 = 31,879.40/x
  3. Step 3: Cross multiply
    48,468.20x = 72,702.30 × 31,879.40
  4. Step 4: Simplify right side
    48,468.20x = 2,317,705,702.62
  5. Step 5: Solve for x
    x = 2,317,705,702.62/48,468.20
  6. Step 6: Final answer
    x = 47,819.10

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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.