Home / 86,831.84-119,787.72-51,021.20

Finding the Fourth Proportional to 86,831.84, 119,787.72 and 51,021.20

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Solution

The fourth proportional to 86,831.84, 119,787.72 and 51,021.20 is: 70,385.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,831.84 : 119,787.72 = 51,021.20 : x
  2. Step 2: Convert to fraction form
    86,831.84/119,787.72 = 51,021.20/x
  3. Step 3: Cross multiply
    86,831.84x = 119,787.72 × 51,021.20
  4. Step 4: Simplify right side
    86,831.84x = 6,111,713,219.66
  5. Step 5: Solve for x
    x = 6,111,713,219.66/86,831.84
  6. Step 6: Final answer
    x = 70,385.62

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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.