Home / 78,936.25-117,389.33-76,444.42

Finding the Fourth Proportional to 78,936.25, 117,389.33 and 76,444.42

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Solution

The fourth proportional to 78,936.25, 117,389.33 and 76,444.42 is: 113,683.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,936.25 : 117,389.33 = 76,444.42 : x
  2. Step 2: Convert to fraction form
    78,936.25/117,389.33 = 76,444.42/x
  3. Step 3: Cross multiply
    78,936.25x = 117,389.33 × 76,444.42
  4. Step 4: Simplify right side
    78,936.25x = 8,973,759,246.04
  5. Step 5: Solve for x
    x = 8,973,759,246.04/78,936.25
  6. Step 6: Final answer
    x = 113,683.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.