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Finding the Fourth Proportional to 85,702.03, 118,262.23 and 47,971.15

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Solution

The fourth proportional to 85,702.03, 118,262.23 and 47,971.15 is: 66,196.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,702.03 : 118,262.23 = 47,971.15 : x
  2. Step 2: Convert to fraction form
    85,702.03/118,262.23 = 47,971.15/x
  3. Step 3: Cross multiply
    85,702.03x = 118,262.23 × 47,971.15
  4. Step 4: Simplify right side
    85,702.03x = 5,673,175,174.66
  5. Step 5: Solve for x
    x = 5,673,175,174.66/85,702.03
  6. Step 6: Final answer
    x = 66,196.51

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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.