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Finding the Fourth Proportional to 86,820.20, 130,230.30 and 27,660.20

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Solution

The fourth proportional to 86,820.20, 130,230.30 and 27,660.20 is: 41,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,820.20 : 130,230.30 = 27,660.20 : x
  2. Step 2: Convert to fraction form
    86,820.20/130,230.30 = 27,660.20/x
  3. Step 3: Cross multiply
    86,820.20x = 130,230.30 × 27,660.20
  4. Step 4: Simplify right side
    86,820.20x = 3,602,196,144.06
  5. Step 5: Solve for x
    x = 3,602,196,144.06/86,820.20
  6. Step 6: Final answer
    x = 41,490.30

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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.