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Finding the Fourth Proportional to 76,133.42, 104,994.31 and 65,374.63

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Solution

The fourth proportional to 76,133.42, 104,994.31 and 65,374.63 is: 90,157.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,133.42 : 104,994.31 = 65,374.63 : x
  2. Step 2: Convert to fraction form
    76,133.42/104,994.31 = 65,374.63/x
  3. Step 3: Cross multiply
    76,133.42x = 104,994.31 × 65,374.63
  4. Step 4: Simplify right side
    76,133.42x = 6,863,964,168.36
  5. Step 5: Solve for x
    x = 6,863,964,168.36/76,133.42
  6. Step 6: Final answer
    x = 90,157.04

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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.