Home / 45,157.32-67,739.76-18,864.36

Finding the Fourth Proportional to 45,157.32, 67,739.76 and 18,864.36

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Solution

The fourth proportional to 45,157.32, 67,739.76 and 18,864.36 is: 28,298.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,157.32 : 67,739.76 = 18,864.36 : x
  2. Step 2: Convert to fraction form
    45,157.32/67,739.76 = 18,864.36/x
  3. Step 3: Cross multiply
    45,157.32x = 67,739.76 × 18,864.36
  4. Step 4: Simplify right side
    45,157.32x = 1,277,867,218.95
  5. Step 5: Solve for x
    x = 1,277,867,218.95/45,157.32
  6. Step 6: Final answer
    x = 28,298.12

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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.