Home / 74,831.16-112,149.76-30,406.36

Finding the Fourth Proportional to 74,831.16, 112,149.76 and 30,406.36

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Solution

The fourth proportional to 74,831.16, 112,149.76 and 30,406.36 is: 45,570.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,831.16 : 112,149.76 = 30,406.36 : x
  2. Step 2: Convert to fraction form
    74,831.16/112,149.76 = 30,406.36/x
  3. Step 3: Cross multiply
    74,831.16x = 112,149.76 × 30,406.36
  4. Step 4: Simplify right side
    74,831.16x = 3,410,065,976.47
  5. Step 5: Solve for x
    x = 3,410,065,976.47/74,831.16
  6. Step 6: Final answer
    x = 45,570.13

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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.