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Finding the Fourth Proportional to 85,647.75, 118,190.88 and 47,407.37

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Solution

The fourth proportional to 85,647.75, 118,190.88 and 47,407.37 is: 65,420.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,647.75 : 118,190.88 = 47,407.37 : x
  2. Step 2: Convert to fraction form
    85,647.75/118,190.88 = 47,407.37/x
  3. Step 3: Cross multiply
    85,647.75x = 118,190.88 × 47,407.37
  4. Step 4: Simplify right side
    85,647.75x = 5,603,118,541.75
  5. Step 5: Solve for x
    x = 5,603,118,541.75/85,647.75
  6. Step 6: Final answer
    x = 65,420.50

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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.