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Finding the Fourth Proportional to 77,991.66, 116,995.74 and 25,405.26

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Solution

The fourth proportional to 77,991.66, 116,995.74 and 25,405.26 is: 38,110.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,991.66 : 116,995.74 = 25,405.26 : x
  2. Step 2: Convert to fraction form
    77,991.66/116,995.74 = 25,405.26/x
  3. Step 3: Cross multiply
    77,991.66x = 116,995.74 × 25,405.26
  4. Step 4: Simplify right side
    77,991.66x = 2,972,307,193.59
  5. Step 5: Solve for x
    x = 2,972,307,193.59/77,991.66
  6. Step 6: Final answer
    x = 38,110.58

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1.5x scale

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.