Home / 77,778.00-107,328.08-43,784.73

Finding the Fourth Proportional to 77,778.00, 107,328.08 and 43,784.73

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Solution

The fourth proportional to 77,778.00, 107,328.08 and 43,784.73 is: 60,419.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,778.00 : 107,328.08 = 43,784.73 : x
  2. Step 2: Convert to fraction form
    77,778.00/107,328.08 = 43,784.73/x
  3. Step 3: Cross multiply
    77,778.00x = 107,328.08 × 43,784.73
  4. Step 4: Simplify right side
    77,778.00x = 4,699,331,217.81
  5. Step 5: Solve for x
    x = 4,699,331,217.81/77,778.00
  6. Step 6: Final answer
    x = 60,419.80

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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.