Home / 86,147.31-129,220.96-39,367.38

Finding the Fourth Proportional to 86,147.31, 129,220.96 and 39,367.38

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Solution

The fourth proportional to 86,147.31, 129,220.96 and 39,367.38 is: 59,051.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,147.31 : 129,220.96 = 39,367.38 : x
  2. Step 2: Convert to fraction form
    86,147.31/129,220.96 = 39,367.38/x
  3. Step 3: Cross multiply
    86,147.31x = 129,220.96 × 39,367.38
  4. Step 4: Simplify right side
    86,147.31x = 5,087,090,636.28
  5. Step 5: Solve for x
    x = 5,087,090,636.28/86,147.31
  6. Step 6: Final answer
    x = 59,051.07

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1.5x scale

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.