Home / 105,418.80-145,471.75-57,669.30

Finding the Fourth Proportional to 105,418.80, 145,471.75 and 57,669.30

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Solution

The fourth proportional to 105,418.80, 145,471.75 and 57,669.30 is: 79,580.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,418.80 : 145,471.75 = 57,669.30 : x
  2. Step 2: Convert to fraction form
    105,418.80/145,471.75 = 57,669.30/x
  3. Step 3: Cross multiply
    105,418.80x = 145,471.75 × 57,669.30
  4. Step 4: Simplify right side
    105,418.80x = 8,389,253,848.10
  5. Step 5: Solve for x
    x = 8,389,253,848.10/105,418.80
  6. Step 6: Final answer
    x = 79,580.24

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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.