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Finding the Fourth Proportional to 68,967.20, 103,450.80 and 40,973.60

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Solution

The fourth proportional to 68,967.20, 103,450.80 and 40,973.60 is: 61,460.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,967.20 : 103,450.80 = 40,973.60 : x
  2. Step 2: Convert to fraction form
    68,967.20/103,450.80 = 40,973.60/x
  3. Step 3: Cross multiply
    68,967.20x = 103,450.80 × 40,973.60
  4. Step 4: Simplify right side
    68,967.20x = 4,238,751,698.88
  5. Step 5: Solve for x
    x = 4,238,751,698.88/68,967.20
  6. Step 6: Final answer
    x = 61,460.40

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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.