Home / 30,048.50-45,075.38-7,861.78

Finding the Fourth Proportional to 30,048.50, 45,075.38 and 7,861.78

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Solution

The fourth proportional to 30,048.50, 45,075.38 and 7,861.78 is: 11,793.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,048.50 : 45,075.38 = 7,861.78 : x
  2. Step 2: Convert to fraction form
    30,048.50/45,075.38 = 7,861.78/x
  3. Step 3: Cross multiply
    30,048.50x = 45,075.38 × 7,861.78
  4. Step 4: Simplify right side
    30,048.50x = 354,372,720.98
  5. Step 5: Solve for x
    x = 354,372,720.98/30,048.50
  6. Step 6: Final answer
    x = 11,793.36

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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.