Home / 85,436.84-117,900.43-47,195.80

Finding the Fourth Proportional to 85,436.84, 117,900.43 and 47,195.80

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Solution

The fourth proportional to 85,436.84, 117,900.43 and 47,195.80 is: 65,128.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,436.84 : 117,900.43 = 47,195.80 : x
  2. Step 2: Convert to fraction form
    85,436.84/117,900.43 = 47,195.80/x
  3. Step 3: Cross multiply
    85,436.84x = 117,900.43 × 47,195.80
  4. Step 4: Simplify right side
    85,436.84x = 5,564,404,701.45
  5. Step 5: Solve for x
    x = 5,564,404,701.45/85,436.84
  6. Step 6: Final answer
    x = 65,128.87

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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.