Home / 86,746.40-130,168.82-39,999.28

Finding the Fourth Proportional to 86,746.40, 130,168.82 and 39,999.28

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Solution

The fourth proportional to 86,746.40, 130,168.82 and 39,999.28 is: 60,021.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,746.40 : 130,168.82 = 39,999.28 : x
  2. Step 2: Convert to fraction form
    86,746.40/130,168.82 = 39,999.28/x
  3. Step 3: Cross multiply
    86,746.40x = 130,168.82 × 39,999.28
  4. Step 4: Simplify right side
    86,746.40x = 5,206,659,078.45
  5. Step 5: Solve for x
    x = 5,206,659,078.45/86,746.40
  6. Step 6: Final answer
    x = 60,021.62

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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.