Home / 45,359.05-68,042.01-12,078.98

Finding the Fourth Proportional to 45,359.05, 68,042.01 and 12,078.98

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Solution

The fourth proportional to 45,359.05, 68,042.01 and 12,078.98 is: 18,119.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,359.05 : 68,042.01 = 12,078.98 : x
  2. Step 2: Convert to fraction form
    45,359.05/68,042.01 = 12,078.98/x
  3. Step 3: Cross multiply
    45,359.05x = 68,042.01 × 12,078.98
  4. Step 4: Simplify right side
    45,359.05x = 821,878,077.95
  5. Step 5: Solve for x
    x = 821,878,077.95/45,359.05
  6. Step 6: Final answer
    x = 18,119.38

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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.