Home / 105,485.85-158,211.72-38,957.31

Finding the Fourth Proportional to 105,485.85, 158,211.72 and 38,957.31

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Solution

The fourth proportional to 105,485.85, 158,211.72 and 38,957.31 is: 58,429.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,485.85 : 158,211.72 = 38,957.31 : x
  2. Step 2: Convert to fraction form
    105,485.85/158,211.72 = 38,957.31/x
  3. Step 3: Cross multiply
    105,485.85x = 158,211.72 × 38,957.31
  4. Step 4: Simplify right side
    105,485.85x = 6,163,503,021.67
  5. Step 5: Solve for x
    x = 6,163,503,021.67/105,485.85
  6. Step 6: Final answer
    x = 58,429.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.