Home / 87,180.36-130,725.12-31,012.32

Finding the Fourth Proportional to 87,180.36, 130,725.12 and 31,012.32

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Solution

The fourth proportional to 87,180.36, 130,725.12 and 31,012.32 is: 46,502.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,180.36 : 130,725.12 = 31,012.32 : x
  2. Step 2: Convert to fraction form
    87,180.36/130,725.12 = 31,012.32/x
  3. Step 3: Cross multiply
    87,180.36x = 130,725.12 × 31,012.32
  4. Step 4: Simplify right side
    87,180.36x = 4,054,089,253.48
  5. Step 5: Solve for x
    x = 4,054,089,253.48/87,180.36
  6. Step 6: Final answer
    x = 46,502.32

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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.