Home / 53,012.12-79,527.90-21,830.36

Finding the Fourth Proportional to 53,012.12, 79,527.90 and 21,830.36

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Solution

The fourth proportional to 53,012.12, 79,527.90 and 21,830.36 is: 32,749.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,012.12 : 79,527.90 = 21,830.36 : x
  2. Step 2: Convert to fraction form
    53,012.12/79,527.90 = 21,830.36/x
  3. Step 3: Cross multiply
    53,012.12x = 79,527.90 × 21,830.36
  4. Step 4: Simplify right side
    53,012.12x = 1,736,122,687.04
  5. Step 5: Solve for x
    x = 1,736,122,687.04/53,012.12
  6. Step 6: Final answer
    x = 32,749.54

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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.