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Finding the Fourth Proportional to 61,609.20, 85,019.40 and 36,466.80

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Solution

The fourth proportional to 61,609.20, 85,019.40 and 36,466.80 is: 50,323.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,609.20 : 85,019.40 = 36,466.80 : x
  2. Step 2: Convert to fraction form
    61,609.20/85,019.40 = 36,466.80/x
  3. Step 3: Cross multiply
    61,609.20x = 85,019.40 × 36,466.80
  4. Step 4: Simplify right side
    61,609.20x = 3,100,385,455.92
  5. Step 5: Solve for x
    x = 3,100,385,455.92/61,609.20
  6. Step 6: Final answer
    x = 50,323.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.