Home / 57,021.99-78,687.16-31,526.88

Finding the Fourth Proportional to 57,021.99, 78,687.16 and 31,526.88

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Solution

The fourth proportional to 57,021.99, 78,687.16 and 31,526.88 is: 43,505.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,021.99 : 78,687.16 = 31,526.88 : x
  2. Step 2: Convert to fraction form
    57,021.99/78,687.16 = 31,526.88/x
  3. Step 3: Cross multiply
    57,021.99x = 78,687.16 × 31,526.88
  4. Step 4: Simplify right side
    57,021.99x = 2,480,760,650.86
  5. Step 5: Solve for x
    x = 2,480,760,650.86/57,021.99
  6. Step 6: Final answer
    x = 43,505.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.