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Finding the Fourth Proportional to 65,994.36, 91,071.45 and 35,779.74

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Solution

The fourth proportional to 65,994.36, 91,071.45 and 35,779.74 is: 49,375.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,994.36 : 91,071.45 = 35,779.74 : x
  2. Step 2: Convert to fraction form
    65,994.36/91,071.45 = 35,779.74/x
  3. Step 3: Cross multiply
    65,994.36x = 91,071.45 × 35,779.74
  4. Step 4: Simplify right side
    65,994.36x = 3,258,512,802.42
  5. Step 5: Solve for x
    x = 3,258,512,802.42/65,994.36
  6. Step 6: Final answer
    x = 49,375.63

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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.