Home / 57,237.09-78,991.17-31,745.79

Finding the Fourth Proportional to 57,237.09, 78,991.17 and 31,745.79

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Solution

The fourth proportional to 57,237.09, 78,991.17 and 31,745.79 is: 43,811.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,237.09 : 78,991.17 = 31,745.79 : x
  2. Step 2: Convert to fraction form
    57,237.09/78,991.17 = 31,745.79/x
  3. Step 3: Cross multiply
    57,237.09x = 78,991.17 × 31,745.79
  4. Step 4: Simplify right side
    57,237.09x = 2,507,637,094.67
  5. Step 5: Solve for x
    x = 2,507,637,094.67/57,237.09
  6. Step 6: Final answer
    x = 43,811.40

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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.