Home / 39,558.31-54,585.64-31,512.45

Finding the Fourth Proportional to 39,558.31, 54,585.64 and 31,512.45

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Solution

The fourth proportional to 39,558.31, 54,585.64 and 31,512.45 is: 43,483.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,558.31 : 54,585.64 = 31,512.45 : x
  2. Step 2: Convert to fraction form
    39,558.31/54,585.64 = 31,512.45/x
  3. Step 3: Cross multiply
    39,558.31x = 54,585.64 × 31,512.45
  4. Step 4: Simplify right side
    39,558.31x = 1,720,127,308.90
  5. Step 5: Solve for x
    x = 1,720,127,308.90/39,558.31
  6. Step 6: Final answer
    x = 43,483.34

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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.