Home / 57,243.08-78,987.93-31,749.14

Finding the Fourth Proportional to 57,243.08, 78,987.93 and 31,749.14

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Solution

The fourth proportional to 57,243.08, 78,987.93 and 31,749.14 is: 43,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,243.08 : 78,987.93 = 31,749.14 : x
  2. Step 2: Convert to fraction form
    57,243.08/78,987.93 = 31,749.14/x
  3. Step 3: Cross multiply
    57,243.08x = 78,987.93 × 31,749.14
  4. Step 4: Simplify right side
    57,243.08x = 2,507,798,847.88
  5. Step 5: Solve for x
    x = 2,507,798,847.88/57,243.08
  6. Step 6: Final answer
    x = 43,809.64

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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.