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Finding the Fourth Proportional to 86,900.94, 130,324.68 and 27,720.72

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Solution

The fourth proportional to 86,900.94, 130,324.68 and 27,720.72 is: 41,572.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,900.94 : 130,324.68 = 27,720.72 : x
  2. Step 2: Convert to fraction form
    86,900.94/130,324.68 = 27,720.72/x
  3. Step 3: Cross multiply
    86,900.94x = 130,324.68 × 27,720.72
  4. Step 4: Simplify right side
    86,900.94x = 3,612,693,963.37
  5. Step 5: Solve for x
    x = 3,612,693,963.37/86,900.94
  6. Step 6: Final answer
    x = 41,572.55

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1.5x scale

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.