Home / 45,139.03-67,714.85-18,837.75

Finding the Fourth Proportional to 45,139.03, 67,714.85 and 18,837.75

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Solution

The fourth proportional to 45,139.03, 67,714.85 and 18,837.75 is: 28,259.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,139.03 : 67,714.85 = 18,837.75 : x
  2. Step 2: Convert to fraction form
    45,139.03/67,714.85 = 18,837.75/x
  3. Step 3: Cross multiply
    45,139.03x = 67,714.85 × 18,837.75
  4. Step 4: Simplify right side
    45,139.03x = 1,275,595,415.59
  5. Step 5: Solve for x
    x = 1,275,595,415.59/45,139.03
  6. Step 6: Final answer
    x = 28,259.26

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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.