Home / 81,831.63-112,889.52-53,149.26

Finding the Fourth Proportional to 81,831.63, 112,889.52 and 53,149.26

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Solution

The fourth proportional to 81,831.63, 112,889.52 and 53,149.26 is: 73,321.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,831.63 : 112,889.52 = 53,149.26 : x
  2. Step 2: Convert to fraction form
    81,831.63/112,889.52 = 53,149.26/x
  3. Step 3: Cross multiply
    81,831.63x = 112,889.52 × 53,149.26
  4. Step 4: Simplify right side
    81,831.63x = 5,999,994,449.76
  5. Step 5: Solve for x
    x = 5,999,994,449.76/81,831.63
  6. Step 6: Final answer
    x = 73,321.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.