Home / 86,815.60-130,126.20-44,679.40

Finding the Fourth Proportional to 86,815.60, 130,126.20 and 44,679.40

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Solution

The fourth proportional to 86,815.60, 130,126.20 and 44,679.40 is: 66,969.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,815.60 : 130,126.20 = 44,679.40 : x
  2. Step 2: Convert to fraction form
    86,815.60/130,126.20 = 44,679.40/x
  3. Step 3: Cross multiply
    86,815.60x = 130,126.20 × 44,679.40
  4. Step 4: Simplify right side
    86,815.60x = 5,813,960,540.28
  5. Step 5: Solve for x
    x = 5,813,960,540.28/86,815.60
  6. Step 6: Final answer
    x = 66,969.08

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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.