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Finding the Fourth Proportional to 65,991.17, 91,068.45 and 35,776.42

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Solution

The fourth proportional to 65,991.17, 91,068.45 and 35,776.42 is: 49,371.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,991.17 : 91,068.45 = 35,776.42 : x
  2. Step 2: Convert to fraction form
    65,991.17/91,068.45 = 35,776.42/x
  3. Step 3: Cross multiply
    65,991.17x = 91,068.45 × 35,776.42
  4. Step 4: Simplify right side
    65,991.17x = 3,258,102,955.36
  5. Step 5: Solve for x
    x = 3,258,102,955.36/65,991.17
  6. Step 6: Final answer
    x = 49,371.80

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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.