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Finding the Fourth Proportional to 76,590.64, 114,768.60 and 51,538

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Solution

The fourth proportional to 76,590.64, 114,768.60 and 51,538 is: 77,228.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,590.64 : 114,768.60 = 51,538 : x
  2. Step 2: Convert to fraction form
    76,590.64/114,768.60 = 51,538/x
  3. Step 3: Cross multiply
    76,590.64x = 114,768.60 × 51,538
  4. Step 4: Simplify right side
    76,590.64x = 5,914,944,106.80
  5. Step 5: Solve for x
    x = 5,914,944,106.80/76,590.64
  6. Step 6: Final answer
    x = 77,228.03

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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.