Home / 66,485.04-91,718.46-39,612.48

Finding the Fourth Proportional to 66,485.04, 91,718.46 and 39,612.48

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Solution

The fourth proportional to 66,485.04, 91,718.46 and 39,612.48 is: 54,646.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485.04 : 91,718.46 = 39,612.48 : x
  2. Step 2: Convert to fraction form
    66,485.04/91,718.46 = 39,612.48/x
  3. Step 3: Cross multiply
    66,485.04x = 91,718.46 × 39,612.48
  4. Step 4: Simplify right side
    66,485.04x = 3,633,195,662.38
  5. Step 5: Solve for x
    x = 3,633,195,662.38/66,485.04
  6. Step 6: Final answer
    x = 54,646.81

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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.