Home / 86,895.64-130,353.78-30,724.12

Finding the Fourth Proportional to 86,895.64, 130,353.78 and 30,724.12

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Solution

The fourth proportional to 86,895.64, 130,353.78 and 30,724.12 is: 46,089.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,895.64 : 130,353.78 = 30,724.12 : x
  2. Step 2: Convert to fraction form
    86,895.64/130,353.78 = 30,724.12/x
  3. Step 3: Cross multiply
    86,895.64x = 130,353.78 × 30,724.12
  4. Step 4: Simplify right side
    86,895.64x = 4,005,005,179.17
  5. Step 5: Solve for x
    x = 4,005,005,179.17/86,895.64
  6. Step 6: Final answer
    x = 46,089.83

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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.