Home / 56,749.48-78,313.65-31,255.36

Finding the Fourth Proportional to 56,749.48, 78,313.65 and 31,255.36

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Solution

The fourth proportional to 56,749.48, 78,313.65 and 31,255.36 is: 43,132.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,749.48 : 78,313.65 = 31,255.36 : x
  2. Step 2: Convert to fraction form
    56,749.48/78,313.65 = 31,255.36/x
  3. Step 3: Cross multiply
    56,749.48x = 78,313.65 × 31,255.36
  4. Step 4: Simplify right side
    56,749.48x = 2,447,721,323.66
  5. Step 5: Solve for x
    x = 2,447,721,323.66/56,749.48
  6. Step 6: Final answer
    x = 43,132.05

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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.