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Finding the Fourth Proportional to 86,017.82, 118,702.67 and 47,775.22

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Solution

The fourth proportional to 86,017.82, 118,702.67 and 47,775.22 is: 65,928.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,017.82 : 118,702.67 = 47,775.22 : x
  2. Step 2: Convert to fraction form
    86,017.82/118,702.67 = 47,775.22/x
  3. Step 3: Cross multiply
    86,017.82x = 118,702.67 × 47,775.22
  4. Step 4: Simplify right side
    86,017.82x = 5,671,045,638.20
  5. Step 5: Solve for x
    x = 5,671,045,638.20/86,017.82
  6. Step 6: Final answer
    x = 65,928.73

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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.