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Finding the Fourth Proportional to 70,840.80, 106,030.80 and 55,173.60

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Solution

The fourth proportional to 70,840.80, 106,030.80 and 55,173.60 is: 82,580.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,840.80 : 106,030.80 = 55,173.60 : x
  2. Step 2: Convert to fraction form
    70,840.80/106,030.80 = 55,173.60/x
  3. Step 3: Cross multiply
    70,840.80x = 106,030.80 × 55,173.60
  4. Step 4: Simplify right side
    70,840.80x = 5,850,100,946.88
  5. Step 5: Solve for x
    x = 5,850,100,946.88/70,840.80
  6. Step 6: Final answer
    x = 82,580.96

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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.