Home / 51,368.40-77,067.36-21,376.80

Finding the Fourth Proportional to 51,368.40, 77,067.36 and 21,376.80

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Solution

The fourth proportional to 51,368.40, 77,067.36 and 21,376.80 is: 32,071.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,368.40 : 77,067.36 = 21,376.80 : x
  2. Step 2: Convert to fraction form
    51,368.40/77,067.36 = 21,376.80/x
  3. Step 3: Cross multiply
    51,368.40x = 77,067.36 × 21,376.80
  4. Step 4: Simplify right side
    51,368.40x = 1,647,453,541.25
  5. Step 5: Solve for x
    x = 1,647,453,541.25/51,368.40
  6. Step 6: Final answer
    x = 32,071.34

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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.