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Finding the Fourth Proportional to 103,638.70, 155,342.85 and 44,464.30

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Solution

The fourth proportional to 103,638.70, 155,342.85 and 44,464.30 is: 66,647.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.70 : 155,342.85 = 44,464.30 : x
  2. Step 2: Convert to fraction form
    103,638.70/155,342.85 = 44,464.30/x
  3. Step 3: Cross multiply
    103,638.70x = 155,342.85 × 44,464.30
  4. Step 4: Simplify right side
    103,638.70x = 6,907,211,085.26
  5. Step 5: Solve for x
    x = 6,907,211,085.26/103,638.70
  6. Step 6: Final answer
    x = 66,647.03

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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.