Home / 57,090.15-78,782.78-31,597.56

Finding the Fourth Proportional to 57,090.15, 78,782.78 and 31,597.56

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Solution

The fourth proportional to 57,090.15, 78,782.78 and 31,597.56 is: 43,603.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,090.15 : 78,782.78 = 31,597.56 : x
  2. Step 2: Convert to fraction form
    57,090.15/78,782.78 = 31,597.56/x
  3. Step 3: Cross multiply
    57,090.15x = 78,782.78 × 31,597.56
  4. Step 4: Simplify right side
    57,090.15x = 2,489,343,519.27
  5. Step 5: Solve for x
    x = 2,489,343,519.27/57,090.15
  6. Step 6: Final answer
    x = 43,603.73

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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.