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Finding the Fourth Proportional to 85,970.75, 118,644.90 and 48,245

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Solution

The fourth proportional to 85,970.75, 118,644.90 and 48,245 is: 66,581.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,970.75 : 118,644.90 = 48,245 : x
  2. Step 2: Convert to fraction form
    85,970.75/118,644.90 = 48,245/x
  3. Step 3: Cross multiply
    85,970.75x = 118,644.90 × 48,245
  4. Step 4: Simplify right side
    85,970.75x = 5,724,023,200.50
  5. Step 5: Solve for x
    x = 5,724,023,200.50/85,970.75
  6. Step 6: Final answer
    x = 66,581.05

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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.