Home / 86,741.21-119,636.81-74,662.23

Finding the Fourth Proportional to 86,741.21, 119,636.81 and 74,662.23

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Solution

The fourth proportional to 86,741.21, 119,636.81 and 74,662.23 is: 102,977.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,741.21 : 119,636.81 = 74,662.23 : x
  2. Step 2: Convert to fraction form
    86,741.21/119,636.81 = 74,662.23/x
  3. Step 3: Cross multiply
    86,741.21x = 119,636.81 × 74,662.23
  4. Step 4: Simplify right side
    86,741.21x = 8,932,350,651.38
  5. Step 5: Solve for x
    x = 8,932,350,651.38/86,741.21
  6. Step 6: Final answer
    x = 102,977.02

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Double scale
Find fourth proportional to 86,742.21, 119,638.18 and 74,663.23
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.