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Finding the Fourth Proportional to 86,862.70, 130,040.50 and 53,482.60

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Solution

The fourth proportional to 86,862.70, 130,040.50 and 53,482.60 is: 80,067.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,862.70 : 130,040.50 = 53,482.60 : x
  2. Step 2: Convert to fraction form
    86,862.70/130,040.50 = 53,482.60/x
  3. Step 3: Cross multiply
    86,862.70x = 130,040.50 × 53,482.60
  4. Step 4: Simplify right side
    86,862.70x = 6,954,904,045.30
  5. Step 5: Solve for x
    x = 6,954,904,045.30/86,862.70
  6. Step 6: Final answer
    x = 80,067.79

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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.