Home / 52,741.33-79,077.36-21,128.24

Finding the Fourth Proportional to 52,741.33, 79,077.36 and 21,128.24

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Solution

The fourth proportional to 52,741.33, 79,077.36 and 21,128.24 is: 31,678.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,741.33 : 79,077.36 = 21,128.24 : x
  2. Step 2: Convert to fraction form
    52,741.33/79,077.36 = 21,128.24/x
  3. Step 3: Cross multiply
    52,741.33x = 79,077.36 × 21,128.24
  4. Step 4: Simplify right side
    52,741.33x = 1,670,765,717.57
  5. Step 5: Solve for x
    x = 1,670,765,717.57/52,741.33
  6. Step 6: Final answer
    x = 31,678.49

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1.5x scale

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.