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Finding the Fourth Proportional to 85,884.96, 118,480.44 and 57,217.98

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Solution

The fourth proportional to 85,884.96, 118,480.44 and 57,217.98 is: 78,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,884.96 : 118,480.44 = 57,217.98 : x
  2. Step 2: Convert to fraction form
    85,884.96/118,480.44 = 57,217.98/x
  3. Step 3: Cross multiply
    85,884.96x = 118,480.44 × 57,217.98
  4. Step 4: Simplify right side
    85,884.96x = 6,779,211,446.31
  5. Step 5: Solve for x
    x = 6,779,211,446.31/85,884.96
  6. Step 6: Final answer
    x = 78,933.63

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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.