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Finding the Fourth Proportional to 103,522.40, 155,283.60 and 47,362.40

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Solution

The fourth proportional to 103,522.40, 155,283.60 and 47,362.40 is: 71,043.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,522.40 : 155,283.60 = 47,362.40 : x
  2. Step 2: Convert to fraction form
    103,522.40/155,283.60 = 47,362.40/x
  3. Step 3: Cross multiply
    103,522.40x = 155,283.60 × 47,362.40
  4. Step 4: Simplify right side
    103,522.40x = 7,354,603,976.64
  5. Step 5: Solve for x
    x = 7,354,603,976.64/103,522.40
  6. Step 6: Final answer
    x = 71,043.60

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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.