Home / 30,048.75-45,052.34-21,620.45

Finding the Fourth Proportional to 30,048.75, 45,052.34 and 21,620.45

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Solution

The fourth proportional to 30,048.75, 45,052.34 and 21,620.45 is: 32,415.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,048.75 : 45,052.34 = 21,620.45 : x
  2. Step 2: Convert to fraction form
    30,048.75/45,052.34 = 21,620.45/x
  3. Step 3: Cross multiply
    30,048.75x = 45,052.34 × 21,620.45
  4. Step 4: Simplify right side
    30,048.75x = 974,051,868.88
  5. Step 5: Solve for x
    x = 974,051,868.88/30,048.75
  6. Step 6: Final answer
    x = 32,415.72

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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.