Home / 105,231.33-145,219.74-57,485.46

Finding the Fourth Proportional to 105,231.33, 145,219.74 and 57,485.46

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Solution

The fourth proportional to 105,231.33, 145,219.74 and 57,485.46 is: 79,330.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,231.33 : 145,219.74 = 57,485.46 : x
  2. Step 2: Convert to fraction form
    105,231.33/145,219.74 = 57,485.46/x
  3. Step 3: Cross multiply
    105,231.33x = 145,219.74 × 57,485.46
  4. Step 4: Simplify right side
    105,231.33x = 8,348,023,554.98
  5. Step 5: Solve for x
    x = 8,348,023,554.98/105,231.33
  6. Step 6: Final answer
    x = 79,330.21

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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.