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Finding the Fourth Proportional to 85,080.36, 117,408.90 and 47,353.80

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Solution

The fourth proportional to 85,080.36, 117,408.90 and 47,353.80 is: 65,347.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,080.36 : 117,408.90 = 47,353.80 : x
  2. Step 2: Convert to fraction form
    85,080.36/117,408.90 = 47,353.80/x
  3. Step 3: Cross multiply
    85,080.36x = 117,408.90 × 47,353.80
  4. Step 4: Simplify right side
    85,080.36x = 5,559,757,568.82
  5. Step 5: Solve for x
    x = 5,559,757,568.82/85,080.36
  6. Step 6: Final answer
    x = 65,347.13

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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.