Home / 86,986.71-130,530.29-47,005.82

Finding the Fourth Proportional to 86,986.71, 130,530.29 and 47,005.82

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Solution

The fourth proportional to 86,986.71, 130,530.29 and 47,005.82 is: 70,535.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,986.71 : 130,530.29 = 47,005.82 : x
  2. Step 2: Convert to fraction form
    86,986.71/130,530.29 = 47,005.82/x
  3. Step 3: Cross multiply
    86,986.71x = 130,530.29 × 47,005.82
  4. Step 4: Simplify right side
    86,986.71x = 6,135,682,918.10
  5. Step 5: Solve for x
    x = 6,135,682,918.10/86,986.71
  6. Step 6: Final answer
    x = 70,535.87

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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.