Home / 51,460.40-77,190.60-21,879.20

Finding the Fourth Proportional to 51,460.40, 77,190.60 and 21,879.20

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Solution

The fourth proportional to 51,460.40, 77,190.60 and 21,879.20 is: 32,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,460.40 : 77,190.60 = 21,879.20 : x
  2. Step 2: Convert to fraction form
    51,460.40/77,190.60 = 21,879.20/x
  3. Step 3: Cross multiply
    51,460.40x = 77,190.60 × 21,879.20
  4. Step 4: Simplify right side
    51,460.40x = 1,688,868,575.52
  5. Step 5: Solve for x
    x = 1,688,868,575.52/51,460.40
  6. Step 6: Final answer
    x = 32,818.80

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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.