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Finding the Fourth Proportional to 74,280.44, 111,409.70 and 21,675.80

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Solution

The fourth proportional to 74,280.44, 111,409.70 and 21,675.80 is: 32,510.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,280.44 : 111,409.70 = 21,675.80 : x
  2. Step 2: Convert to fraction form
    74,280.44/111,409.70 = 21,675.80/x
  3. Step 3: Cross multiply
    74,280.44x = 111,409.70 × 21,675.80
  4. Step 4: Simplify right side
    74,280.44x = 2,414,894,375.26
  5. Step 5: Solve for x
    x = 2,414,894,375.26/74,280.44
  6. Step 6: Final answer
    x = 32,510.50

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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.