Home / 86,019.64-129,071.73-38,668.19

Finding the Fourth Proportional to 86,019.64, 129,071.73 and 38,668.19

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Solution

The fourth proportional to 86,019.64, 129,071.73 and 38,668.19 is: 58,021.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,019.64 : 129,071.73 = 38,668.19 : x
  2. Step 2: Convert to fraction form
    86,019.64/129,071.73 = 38,668.19/x
  3. Step 3: Cross multiply
    86,019.64x = 129,071.73 × 38,668.19
  4. Step 4: Simplify right side
    86,019.64x = 4,990,970,179.27
  5. Step 5: Solve for x
    x = 4,990,970,179.27/86,019.64
  6. Step 6: Final answer
    x = 58,021.29

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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.