Home / 85,403.16-117,861.82-47,677.40

Finding the Fourth Proportional to 85,403.16, 117,861.82 and 47,677.40

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Solution

The fourth proportional to 85,403.16, 117,861.82 and 47,677.40 is: 65,797.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,403.16 : 117,861.82 = 47,677.40 : x
  2. Step 2: Convert to fraction form
    85,403.16/117,861.82 = 47,677.40/x
  3. Step 3: Cross multiply
    85,403.16x = 117,861.82 × 47,677.40
  4. Step 4: Simplify right side
    85,403.16x = 5,619,345,136.87
  5. Step 5: Solve for x
    x = 5,619,345,136.87/85,403.16
  6. Step 6: Final answer
    x = 65,797.86

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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.