Home / 83,781.09-125,712.63-39,412.32

Finding the Fourth Proportional to 83,781.09, 125,712.63 and 39,412.32

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Solution

The fourth proportional to 83,781.09, 125,712.63 and 39,412.32 is: 59,137.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,781.09 : 125,712.63 = 39,412.32 : x
  2. Step 2: Convert to fraction form
    83,781.09/125,712.63 = 39,412.32/x
  3. Step 3: Cross multiply
    83,781.09x = 125,712.63 × 39,412.32
  4. Step 4: Simplify right side
    83,781.09x = 4,954,626,401.60
  5. Step 5: Solve for x
    x = 4,954,626,401.60/83,781.09
  6. Step 6: Final answer
    x = 59,137.76

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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.