Home / 105,283.72-145,289.10-57,538.36

Finding the Fourth Proportional to 105,283.72, 145,289.10 and 57,538.36

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Solution

The fourth proportional to 105,283.72, 145,289.10 and 57,538.36 is: 79,401.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,283.72 : 145,289.10 = 57,538.36 : x
  2. Step 2: Convert to fraction form
    105,283.72/145,289.10 = 57,538.36/x
  3. Step 3: Cross multiply
    105,283.72x = 145,289.10 × 57,538.36
  4. Step 4: Simplify right side
    105,283.72x = 8,359,696,539.88
  5. Step 5: Solve for x
    x = 8,359,696,539.88/105,283.72
  6. Step 6: Final answer
    x = 79,401.61

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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.