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Finding the Fourth Proportional to 85,840.75, 118,465.70 and 48,115

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Solution

The fourth proportional to 85,840.75, 118,465.70 and 48,115 is: 66,401.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,840.75 : 118,465.70 = 48,115 : x
  2. Step 2: Convert to fraction form
    85,840.75/118,465.70 = 48,115/x
  3. Step 3: Cross multiply
    85,840.75x = 118,465.70 × 48,115
  4. Step 4: Simplify right side
    85,840.75x = 5,699,977,155.50
  5. Step 5: Solve for x
    x = 5,699,977,155.50/85,840.75
  6. Step 6: Final answer
    x = 66,401.76

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.