Home / 77,855.08-107,440.01-42,045.09

Finding the Fourth Proportional to 77,855.08, 107,440.01 and 42,045.09

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Solution

The fourth proportional to 77,855.08, 107,440.01 and 42,045.09 is: 58,022.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,855.08 : 107,440.01 = 42,045.09 : x
  2. Step 2: Convert to fraction form
    77,855.08/107,440.01 = 42,045.09/x
  3. Step 3: Cross multiply
    77,855.08x = 107,440.01 × 42,045.09
  4. Step 4: Simplify right side
    77,855.08x = 4,517,324,890.05
  5. Step 5: Solve for x
    x = 4,517,324,890.05/77,855.08
  6. Step 6: Final answer
    x = 58,022.22

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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.