Home / 86,981.84-120,058.56-51,183.36

Finding the Fourth Proportional to 86,981.84, 120,058.56 and 51,183.36

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Solution

The fourth proportional to 86,981.84, 120,058.56 and 51,183.36 is: 70,646.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,981.84 : 120,058.56 = 51,183.36 : x
  2. Step 2: Convert to fraction form
    86,981.84/120,058.56 = 51,183.36/x
  3. Step 3: Cross multiply
    86,981.84x = 120,058.56 × 51,183.36
  4. Step 4: Simplify right side
    86,981.84x = 6,145,000,497.56
  5. Step 5: Solve for x
    x = 6,145,000,497.56/86,981.84
  6. Step 6: Final answer
    x = 70,646.94

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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.