Home / 86,869.55-130,304.25-30,679.11

Finding the Fourth Proportional to 86,869.55, 130,304.25 and 30,679.11

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Solution

The fourth proportional to 86,869.55, 130,304.25 and 30,679.11 is: 46,018.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,869.55 : 130,304.25 = 30,679.11 : x
  2. Step 2: Convert to fraction form
    86,869.55/130,304.25 = 30,679.11/x
  3. Step 3: Cross multiply
    86,869.55x = 130,304.25 × 30,679.11
  4. Step 4: Simplify right side
    86,869.55x = 3,997,618,419.22
  5. Step 5: Solve for x
    x = 3,997,618,419.22/86,869.55
  6. Step 6: Final answer
    x = 46,018.64

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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.