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Finding the Fourth Proportional to 85,903.03, 118,546.01 and 47,668.40

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Solution

The fourth proportional to 85,903.03, 118,546.01 and 47,668.40 is: 65,782.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,903.03 : 118,546.01 = 47,668.40 : x
  2. Step 2: Convert to fraction form
    85,903.03/118,546.01 = 47,668.40/x
  3. Step 3: Cross multiply
    85,903.03x = 118,546.01 × 47,668.40
  4. Step 4: Simplify right side
    85,903.03x = 5,650,898,683.45
  5. Step 5: Solve for x
    x = 5,650,898,683.45/85,903.03
  6. Step 6: Final answer
    x = 65,782.30

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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.