Home / 78,768.81-118,118.66-29,486.25

Finding the Fourth Proportional to 78,768.81, 118,118.66 and 29,486.25

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Solution

The fourth proportional to 78,768.81, 118,118.66 and 29,486.25 is: 44,216.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,768.81 : 118,118.66 = 29,486.25 : x
  2. Step 2: Convert to fraction form
    78,768.81/118,118.66 = 29,486.25/x
  3. Step 3: Cross multiply
    78,768.81x = 118,118.66 × 29,486.25
  4. Step 4: Simplify right side
    78,768.81x = 3,482,876,190.99
  5. Step 5: Solve for x
    x = 3,482,876,190.99/78,768.81
  6. Step 6: Final answer
    x = 44,216.44

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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.