Home / 30,137.10-45,205.65-28,857.30

Finding the Fourth Proportional to 30,137.10, 45,205.65 and 28,857.30

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Solution

The fourth proportional to 30,137.10, 45,205.65 and 28,857.30 is: 43,285.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,137.10 : 45,205.65 = 28,857.30 : x
  2. Step 2: Convert to fraction form
    30,137.10/45,205.65 = 28,857.30/x
  3. Step 3: Cross multiply
    30,137.10x = 45,205.65 × 28,857.30
  4. Step 4: Simplify right side
    30,137.10x = 1,304,513,003.75
  5. Step 5: Solve for x
    x = 1,304,513,003.75/30,137.10
  6. Step 6: Final answer
    x = 43,285.95

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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.