Home / 87,354.36-131,038.38-31,206.60

Finding the Fourth Proportional to 87,354.36, 131,038.38 and 31,206.60

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Solution

The fourth proportional to 87,354.36, 131,038.38 and 31,206.60 is: 46,812.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,354.36 : 131,038.38 = 31,206.60 : x
  2. Step 2: Convert to fraction form
    87,354.36/131,038.38 = 31,206.60/x
  3. Step 3: Cross multiply
    87,354.36x = 131,038.38 × 31,206.60
  4. Step 4: Simplify right side
    87,354.36x = 4,089,262,309.31
  5. Step 5: Solve for x
    x = 4,089,262,309.31/87,354.36
  6. Step 6: Final answer
    x = 46,812.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.