Home / 105,603.75-145,733.18-57,858.91

Finding the Fourth Proportional to 105,603.75, 145,733.18 and 57,858.91

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Solution

The fourth proportional to 105,603.75, 145,733.18 and 57,858.91 is: 79,845.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,603.75 : 145,733.18 = 57,858.91 : x
  2. Step 2: Convert to fraction form
    105,603.75/145,733.18 = 57,858.91/x
  3. Step 3: Cross multiply
    105,603.75x = 145,733.18 × 57,858.91
  4. Step 4: Simplify right side
    105,603.75x = 8,431,962,292.01
  5. Step 5: Solve for x
    x = 8,431,962,292.01/105,603.75
  6. Step 6: Final answer
    x = 79,845.29

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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.