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Finding the Fourth Proportional to 86,751.54, 130,139.46 and 26,784.90

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Solution

The fourth proportional to 86,751.54, 130,139.46 and 26,784.90 is: 40,181.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,751.54 : 130,139.46 = 26,784.90 : x
  2. Step 2: Convert to fraction form
    86,751.54/130,139.46 = 26,784.90/x
  3. Step 3: Cross multiply
    86,751.54x = 130,139.46 × 26,784.90
  4. Step 4: Simplify right side
    86,751.54x = 3,485,772,422.15
  5. Step 5: Solve for x
    x = 3,485,772,422.15/86,751.54
  6. Step 6: Final answer
    x = 40,181.10

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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.