Home / 86,860.81-130,310.34-49,438.50

Finding the Fourth Proportional to 86,860.81, 130,310.34 and 49,438.50

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Solution

The fourth proportional to 86,860.81, 130,310.34 and 49,438.50 is: 74,168.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,860.81 : 130,310.34 = 49,438.50 : x
  2. Step 2: Convert to fraction form
    86,860.81/130,310.34 = 49,438.50/x
  3. Step 3: Cross multiply
    86,860.81x = 130,310.34 × 49,438.50
  4. Step 4: Simplify right side
    86,860.81x = 6,442,347,744.09
  5. Step 5: Solve for x
    x = 6,442,347,744.09/86,860.81
  6. Step 6: Final answer
    x = 74,168.64

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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.