Home / 86,895.51-130,335.08-27,720.78

Finding the Fourth Proportional to 86,895.51, 130,335.08 and 27,720.78

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Solution

The fourth proportional to 86,895.51, 130,335.08 and 27,720.78 is: 41,578.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,895.51 : 130,335.08 = 27,720.78 : x
  2. Step 2: Convert to fraction form
    86,895.51/130,335.08 = 27,720.78/x
  3. Step 3: Cross multiply
    86,895.51x = 130,335.08 × 27,720.78
  4. Step 4: Simplify right side
    86,895.51x = 3,612,989,940.36
  5. Step 5: Solve for x
    x = 3,612,989,940.36/86,895.51
  6. Step 6: Final answer
    x = 41,578.56

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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.