Home / 83,637.77-115,412.45-49,640.45

Finding the Fourth Proportional to 83,637.77, 115,412.45 and 49,640.45

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Solution

The fourth proportional to 83,637.77, 115,412.45 and 49,640.45 is: 68,499.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,637.77 : 115,412.45 = 49,640.45 : x
  2. Step 2: Convert to fraction form
    83,637.77/115,412.45 = 49,640.45/x
  3. Step 3: Cross multiply
    83,637.77x = 115,412.45 × 49,640.45
  4. Step 4: Simplify right side
    83,637.77x = 5,729,125,128.34
  5. Step 5: Solve for x
    x = 5,729,125,128.34/83,637.77
  6. Step 6: Final answer
    x = 68,499.26

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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.