Home / 98,539.68-147,831.12-31,986.48

Finding the Fourth Proportional to 98,539.68, 147,831.12 and 31,986.48

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Solution

The fourth proportional to 98,539.68, 147,831.12 and 31,986.48 is: 47,986.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,539.68 : 147,831.12 = 31,986.48 : x
  2. Step 2: Convert to fraction form
    98,539.68/147,831.12 = 31,986.48/x
  3. Step 3: Cross multiply
    98,539.68x = 147,831.12 × 31,986.48
  4. Step 4: Simplify right side
    98,539.68x = 4,728,597,163.26
  5. Step 5: Solve for x
    x = 4,728,597,163.26/98,539.68
  6. Step 6: Final answer
    x = 47,986.73

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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.