Home / 53,231.74-79,803.81-21,214.06

Finding the Fourth Proportional to 53,231.74, 79,803.81 and 21,214.06

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Solution

The fourth proportional to 53,231.74, 79,803.81 and 21,214.06 is: 31,803.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,231.74 : 79,803.81 = 21,214.06 : x
  2. Step 2: Convert to fraction form
    53,231.74/79,803.81 = 21,214.06/x
  3. Step 3: Cross multiply
    53,231.74x = 79,803.81 × 21,214.06
  4. Step 4: Simplify right side
    53,231.74x = 1,692,962,813.57
  5. Step 5: Solve for x
    x = 1,692,962,813.57/53,231.74
  6. Step 6: Final answer
    x = 31,803.63

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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.