Home / 85,821.12-118,391.01-74,474.67

Finding the Fourth Proportional to 85,821.12, 118,391.01 and 74,474.67

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Solution

The fourth proportional to 85,821.12, 118,391.01 and 74,474.67 is: 102,738.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,821.12 : 118,391.01 = 74,474.67 : x
  2. Step 2: Convert to fraction form
    85,821.12/118,391.01 = 74,474.67/x
  3. Step 3: Cross multiply
    85,821.12x = 118,391.01 × 74,474.67
  4. Step 4: Simplify right side
    85,821.12x = 8,817,131,400.72
  5. Step 5: Solve for x
    x = 8,817,131,400.72/85,821.12
  6. Step 6: Final answer
    x = 102,738.48

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1.5x scale

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.