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Finding the Fourth Proportional to 61,238.80, 91,852.80 and 16,861.60

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Solution

The fourth proportional to 61,238.80, 91,852.80 and 16,861.60 is: 25,290.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,238.80 : 91,852.80 = 16,861.60 : x
  2. Step 2: Convert to fraction form
    61,238.80/91,852.80 = 16,861.60/x
  3. Step 3: Cross multiply
    61,238.80x = 91,852.80 × 16,861.60
  4. Step 4: Simplify right side
    61,238.80x = 1,548,785,172.48
  5. Step 5: Solve for x
    x = 1,548,785,172.48/61,238.80
  6. Step 6: Final answer
    x = 25,290.91

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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.