Home / 85,638.48-118,180.26-47,913

Finding the Fourth Proportional to 85,638.48, 118,180.26 and 47,913

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Solution

The fourth proportional to 85,638.48, 118,180.26 and 47,913 is: 66,119.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,638.48 : 118,180.26 = 47,913 : x
  2. Step 2: Convert to fraction form
    85,638.48/118,180.26 = 47,913/x
  3. Step 3: Cross multiply
    85,638.48x = 118,180.26 × 47,913
  4. Step 4: Simplify right side
    85,638.48x = 5,662,370,797.38
  5. Step 5: Solve for x
    x = 5,662,370,797.38/85,638.48
  6. Step 6: Final answer
    x = 66,119.47

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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.