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Finding the Fourth Proportional to 84,969.66, 117,085.14 and 65,732.56

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Solution

The fourth proportional to 84,969.66, 117,085.14 and 65,732.56 is: 90,577.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,969.66 : 117,085.14 = 65,732.56 : x
  2. Step 2: Convert to fraction form
    84,969.66/117,085.14 = 65,732.56/x
  3. Step 3: Cross multiply
    84,969.66x = 117,085.14 × 65,732.56
  4. Step 4: Simplify right side
    84,969.66x = 7,696,305,990.16
  5. Step 5: Solve for x
    x = 7,696,305,990.16/84,969.66
  6. Step 6: Final answer
    x = 90,577.11

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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.