Home / 48,051.76-72,081.36-12,991.60

Finding the Fourth Proportional to 48,051.76, 72,081.36 and 12,991.60

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Solution

The fourth proportional to 48,051.76, 72,081.36 and 12,991.60 is: 19,488.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,051.76 : 72,081.36 = 12,991.60 : x
  2. Step 2: Convert to fraction form
    48,051.76/72,081.36 = 12,991.60/x
  3. Step 3: Cross multiply
    48,051.76x = 72,081.36 × 12,991.60
  4. Step 4: Simplify right side
    48,051.76x = 936,452,196.58
  5. Step 5: Solve for x
    x = 936,452,196.58/48,051.76
  6. Step 6: Final answer
    x = 19,488.41

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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.