Home / 66,505.81-91,775.16-36,290.38

Finding the Fourth Proportional to 66,505.81, 91,775.16 and 36,290.38

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Solution

The fourth proportional to 66,505.81, 91,775.16 and 36,290.38 is: 50,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,505.81 : 91,775.16 = 36,290.38 : x
  2. Step 2: Convert to fraction form
    66,505.81/91,775.16 = 36,290.38/x
  3. Step 3: Cross multiply
    66,505.81x = 91,775.16 × 36,290.38
  4. Step 4: Simplify right side
    66,505.81x = 3,330,554,790.63
  5. Step 5: Solve for x
    x = 3,330,554,790.63/66,505.81
  6. Step 6: Final answer
    x = 50,079.16

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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.