Home / 72,747.16-109,147.39-30,637.84

Finding the Fourth Proportional to 72,747.16, 109,147.39 and 30,637.84

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Solution

The fourth proportional to 72,747.16, 109,147.39 and 30,637.84 is: 45,967.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,747.16 : 109,147.39 = 30,637.84 : x
  2. Step 2: Convert to fraction form
    72,747.16/109,147.39 = 30,637.84/x
  3. Step 3: Cross multiply
    72,747.16x = 109,147.39 × 30,637.84
  4. Step 4: Simplify right side
    72,747.16x = 3,344,040,271.24
  5. Step 5: Solve for x
    x = 3,344,040,271.24/72,747.16
  6. Step 6: Final answer
    x = 45,967.98

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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.