Home / 79,328.40-118,961.70-39,858

Finding the Fourth Proportional to 79,328.40, 118,961.70 and 39,858

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Solution

The fourth proportional to 79,328.40, 118,961.70 and 39,858 is: 59,771.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,328.40 : 118,961.70 = 39,858 : x
  2. Step 2: Convert to fraction form
    79,328.40/118,961.70 = 39,858/x
  3. Step 3: Cross multiply
    79,328.40x = 118,961.70 × 39,858
  4. Step 4: Simplify right side
    79,328.40x = 4,741,575,438.60
  5. Step 5: Solve for x
    x = 4,741,575,438.60/79,328.40
  6. Step 6: Final answer
    x = 59,771.47

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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.