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Finding the Fourth Proportional to 84,181.86, 116,225.63 and 65,028.30

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Solution

The fourth proportional to 84,181.86, 116,225.63 and 65,028.30 is: 89,781.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,181.86 : 116,225.63 = 65,028.30 : x
  2. Step 2: Convert to fraction form
    84,181.86/116,225.63 = 65,028.30/x
  3. Step 3: Cross multiply
    84,181.86x = 116,225.63 × 65,028.30
  4. Step 4: Simplify right side
    84,181.86x = 7,557,954,810.19
  5. Step 5: Solve for x
    x = 7,557,954,810.19/84,181.86
  6. Step 6: Final answer
    x = 89,781.28

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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.