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Finding the Fourth Proportional to 68,777.60, 103,166.40 and 51,281.60

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Solution

The fourth proportional to 68,777.60, 103,166.40 and 51,281.60 is: 76,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,777.60 : 103,166.40 = 51,281.60 : x
  2. Step 2: Convert to fraction form
    68,777.60/103,166.40 = 51,281.60/x
  3. Step 3: Cross multiply
    68,777.60x = 103,166.40 × 51,281.60
  4. Step 4: Simplify right side
    68,777.60x = 5,290,538,058.24
  5. Step 5: Solve for x
    x = 5,290,538,058.24/68,777.60
  6. Step 6: Final answer
    x = 76,922.40

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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.