Home / 105,459.19-145,537.33-57,712.54

Finding the Fourth Proportional to 105,459.19, 145,537.33 and 57,712.54

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Solution

The fourth proportional to 105,459.19, 145,537.33 and 57,712.54 is: 79,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,459.19 : 145,537.33 = 57,712.54 : x
  2. Step 2: Convert to fraction form
    105,459.19/145,537.33 = 57,712.54/x
  3. Step 3: Cross multiply
    105,459.19x = 145,537.33 × 57,712.54
  4. Step 4: Simplify right side
    105,459.19x = 8,399,328,809.74
  5. Step 5: Solve for x
    x = 8,399,328,809.74/105,459.19
  6. Step 6: Final answer
    x = 79,645.30

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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.