Home / 30,220.80-45,331.20-30,002.10

Finding the Fourth Proportional to 30,220.80, 45,331.20 and 30,002.10

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Solution

The fourth proportional to 30,220.80, 45,331.20 and 30,002.10 is: 45,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,220.80 : 45,331.20 = 30,002.10 : x
  2. Step 2: Convert to fraction form
    30,220.80/45,331.20 = 30,002.10/x
  3. Step 3: Cross multiply
    30,220.80x = 45,331.20 × 30,002.10
  4. Step 4: Simplify right side
    30,220.80x = 1,360,031,195.52
  5. Step 5: Solve for x
    x = 1,360,031,195.52/30,220.80
  6. Step 6: Final answer
    x = 45,003.15

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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.