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Finding the Fourth Proportional to 30,443.75, 45,679.31 and 19,347.56

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Solution

The fourth proportional to 30,443.75, 45,679.31 and 19,347.56 is: 29,030.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,443.75 : 45,679.31 = 19,347.56 : x
  2. Step 2: Convert to fraction form
    30,443.75/45,679.31 = 19,347.56/x
  3. Step 3: Cross multiply
    30,443.75x = 45,679.31 × 19,347.56
  4. Step 4: Simplify right side
    30,443.75x = 883,783,190.98
  5. Step 5: Solve for x
    x = 883,783,190.98/30,443.75
  6. Step 6: Final answer
    x = 29,030.04

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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.