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Finding the Fourth Proportional to 49,261.60, 73,870.80 and 19,669.60

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Solution

The fourth proportional to 49,261.60, 73,870.80 and 19,669.60 is: 29,495.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,261.60 : 73,870.80 = 19,669.60 : x
  2. Step 2: Convert to fraction form
    49,261.60/73,870.80 = 19,669.60/x
  3. Step 3: Cross multiply
    49,261.60x = 73,870.80 × 19,669.60
  4. Step 4: Simplify right side
    49,261.60x = 1,453,009,087.68
  5. Step 5: Solve for x
    x = 1,453,009,087.68/49,261.60
  6. Step 6: Final answer
    x = 29,495.78

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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.