Home / 77,814.45-107,817.60-76,132.89

Finding the Fourth Proportional to 77,814.45, 107,817.60 and 76,132.89

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Solution

The fourth proportional to 77,814.45, 107,817.60 and 76,132.89 is: 105,487.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,814.45 : 107,817.60 = 76,132.89 : x
  2. Step 2: Convert to fraction form
    77,814.45/107,817.60 = 76,132.89/x
  3. Step 3: Cross multiply
    77,814.45x = 107,817.60 × 76,132.89
  4. Step 4: Simplify right side
    77,814.45x = 8,208,465,480.86
  5. Step 5: Solve for x
    x = 8,208,465,480.86/77,814.45
  6. Step 6: Final answer
    x = 105,487.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.