Home / 66,068.96-91,145.40-39,212.60

Finding the Fourth Proportional to 66,068.96, 91,145.40 and 39,212.60

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Solution

The fourth proportional to 66,068.96, 91,145.40 and 39,212.60 is: 54,095.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,068.96 : 91,145.40 = 39,212.60 : x
  2. Step 2: Convert to fraction form
    66,068.96/91,145.40 = 39,212.60/x
  3. Step 3: Cross multiply
    66,068.96x = 91,145.40 × 39,212.60
  4. Step 4: Simplify right side
    66,068.96x = 3,574,048,112.04
  5. Step 5: Solve for x
    x = 3,574,048,112.04/66,068.96
  6. Step 6: Final answer
    x = 54,095.72

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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.