Home / 85,621.80-128,432.88-46,197.48

Finding the Fourth Proportional to 85,621.80, 128,432.88 and 46,197.48

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Solution

The fourth proportional to 85,621.80, 128,432.88 and 46,197.48 is: 69,296.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,621.80 : 128,432.88 = 46,197.48 : x
  2. Step 2: Convert to fraction form
    85,621.80/128,432.88 = 46,197.48/x
  3. Step 3: Cross multiply
    85,621.80x = 128,432.88 × 46,197.48
  4. Step 4: Simplify right side
    85,621.80x = 5,933,275,405.14
  5. Step 5: Solve for x
    x = 5,933,275,405.14/85,621.80
  6. Step 6: Final answer
    x = 69,296.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.