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Finding the Fourth Proportional to 103,640, 155,509.20 and 44,492.60

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Solution

The fourth proportional to 103,640, 155,509.20 and 44,492.60 is: 66,760.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640 : 155,509.20 = 44,492.60 : x
  2. Step 2: Convert to fraction form
    103,640/155,509.20 = 44,492.60/x
  3. Step 3: Cross multiply
    103,640x = 155,509.20 × 44,492.60
  4. Step 4: Simplify right side
    103,640x = 6,919,008,631.92
  5. Step 5: Solve for x
    x = 6,919,008,631.92/103,640
  6. Step 6: Final answer
    x = 66,760.02

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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.