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Finding the Fourth Proportional to 86,908.20, 130,362.30 and 27,748.20

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Solution

The fourth proportional to 86,908.20, 130,362.30 and 27,748.20 is: 41,622.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,908.20 : 130,362.30 = 27,748.20 : x
  2. Step 2: Convert to fraction form
    86,908.20/130,362.30 = 27,748.20/x
  3. Step 3: Cross multiply
    86,908.20x = 130,362.30 × 27,748.20
  4. Step 4: Simplify right side
    86,908.20x = 3,617,319,172.86
  5. Step 5: Solve for x
    x = 3,617,319,172.86/86,908.20
  6. Step 6: Final answer
    x = 41,622.30

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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.