Home / 66,283.68-91,436.61-39,407.07

Finding the Fourth Proportional to 66,283.68, 91,436.61 and 39,407.07

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Solution

The fourth proportional to 66,283.68, 91,436.61 and 39,407.07 is: 54,361.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,283.68 : 91,436.61 = 39,407.07 : x
  2. Step 2: Convert to fraction form
    66,283.68/91,436.61 = 39,407.07/x
  3. Step 3: Cross multiply
    66,283.68x = 91,436.61 × 39,407.07
  4. Step 4: Simplify right side
    66,283.68x = 3,603,248,890.83
  5. Step 5: Solve for x
    x = 3,603,248,890.83/66,283.68
  6. Step 6: Final answer
    x = 54,361.03

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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.