Home / 85,115.63-117,460.38-47,390.69

Finding the Fourth Proportional to 85,115.63, 117,460.38 and 47,390.69

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Solution

The fourth proportional to 85,115.63, 117,460.38 and 47,390.69 is: 65,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,115.63 : 117,460.38 = 47,390.69 : x
  2. Step 2: Convert to fraction form
    85,115.63/117,460.38 = 47,390.69/x
  3. Step 3: Cross multiply
    85,115.63x = 117,460.38 × 47,390.69
  4. Step 4: Simplify right side
    85,115.63x = 5,566,527,868.56
  5. Step 5: Solve for x
    x = 5,566,527,868.56/85,115.63
  6. Step 6: Final answer
    x = 65,399.60

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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.