Home / 81,055.98-121,518.36-31,110.57

Finding the Fourth Proportional to 81,055.98, 121,518.36 and 31,110.57

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Solution

The fourth proportional to 81,055.98, 121,518.36 and 31,110.57 is: 46,640.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,055.98 : 121,518.36 = 31,110.57 : x
  2. Step 2: Convert to fraction form
    81,055.98/121,518.36 = 31,110.57/x
  3. Step 3: Cross multiply
    81,055.98x = 121,518.36 × 31,110.57
  4. Step 4: Simplify right side
    81,055.98x = 3,780,505,445.07
  5. Step 5: Solve for x
    x = 3,780,505,445.07/81,055.98
  6. Step 6: Final answer
    x = 46,640.67

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1.5x scale

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.