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Finding the Fourth Proportional to 76,653.90, 114,986.52 and 26,728.02

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Solution

The fourth proportional to 76,653.90, 114,986.52 and 26,728.02 is: 40,094.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,653.90 : 114,986.52 = 26,728.02 : x
  2. Step 2: Convert to fraction form
    76,653.90/114,986.52 = 26,728.02/x
  3. Step 3: Cross multiply
    76,653.90x = 114,986.52 × 26,728.02
  4. Step 4: Simplify right side
    76,653.90x = 3,073,362,006.29
  5. Step 5: Solve for x
    x = 3,073,362,006.29/76,653.90
  6. Step 6: Final answer
    x = 40,094.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.