Home / 81,312.35-121,790.88-33,783.35

Finding the Fourth Proportional to 81,312.35, 121,790.88 and 33,783.35

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Solution

The fourth proportional to 81,312.35, 121,790.88 and 33,783.35 is: 50,601.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,312.35 : 121,790.88 = 33,783.35 : x
  2. Step 2: Convert to fraction form
    81,312.35/121,790.88 = 33,783.35/x
  3. Step 3: Cross multiply
    81,312.35x = 121,790.88 × 33,783.35
  4. Step 4: Simplify right side
    81,312.35x = 4,114,503,316.89
  5. Step 5: Solve for x
    x = 4,114,503,316.89/81,312.35
  6. Step 6: Final answer
    x = 50,601.21

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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.