Home / 78,788.50-118,116.46-36,647.17

Finding the Fourth Proportional to 78,788.50, 118,116.46 and 36,647.17

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Solution

The fourth proportional to 78,788.50, 118,116.46 and 36,647.17 is: 54,939.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,788.50 : 118,116.46 = 36,647.17 : x
  2. Step 2: Convert to fraction form
    78,788.50/118,116.46 = 36,647.17/x
  3. Step 3: Cross multiply
    78,788.50x = 118,116.46 × 36,647.17
  4. Step 4: Simplify right side
    78,788.50x = 4,328,633,989.42
  5. Step 5: Solve for x
    x = 4,328,633,989.42/78,788.50
  6. Step 6: Final answer
    x = 54,939.92

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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.