Home / 77,922.81-107,533.96-42,112.73

Finding the Fourth Proportional to 77,922.81, 107,533.96 and 42,112.73

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Solution

The fourth proportional to 77,922.81, 107,533.96 and 42,112.73 is: 58,115.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,922.81 : 107,533.96 = 42,112.73 : x
  2. Step 2: Convert to fraction form
    77,922.81/107,533.96 = 42,112.73/x
  3. Step 3: Cross multiply
    77,922.81x = 107,533.96 × 42,112.73
  4. Step 4: Simplify right side
    77,922.81x = 4,528,548,623.31
  5. Step 5: Solve for x
    x = 4,528,548,623.31/77,922.81
  6. Step 6: Final answer
    x = 58,115.83

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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.