Home / 85,157.21-117,518.09-47,431.46

Finding the Fourth Proportional to 85,157.21, 117,518.09 and 47,431.46

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Solution

The fourth proportional to 85,157.21, 117,518.09 and 47,431.46 is: 65,456.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,157.21 : 117,518.09 = 47,431.46 : x
  2. Step 2: Convert to fraction form
    85,157.21/117,518.09 = 47,431.46/x
  3. Step 3: Cross multiply
    85,157.21x = 117,518.09 × 47,431.46
  4. Step 4: Simplify right side
    85,157.21x = 5,574,053,760.36
  5. Step 5: Solve for x
    x = 5,574,053,760.36/85,157.21
  6. Step 6: Final answer
    x = 65,456.04

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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.