Home / 78,724.90-118,056.84-26,120.26

Finding the Fourth Proportional to 78,724.90, 118,056.84 and 26,120.26

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Solution

The fourth proportional to 78,724.90, 118,056.84 and 26,120.26 is: 39,170.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,724.90 : 118,056.84 = 26,120.26 : x
  2. Step 2: Convert to fraction form
    78,724.90/118,056.84 = 26,120.26/x
  3. Step 3: Cross multiply
    78,724.90x = 118,056.84 × 26,120.26
  4. Step 4: Simplify right side
    78,724.90x = 3,083,675,355.58
  5. Step 5: Solve for x
    x = 3,083,675,355.58/78,724.90
  6. Step 6: Final answer
    x = 39,170.27

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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.