Home / 66,435.65-91,685.28-38,145.59

Finding the Fourth Proportional to 66,435.65, 91,685.28 and 38,145.59

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Solution

The fourth proportional to 66,435.65, 91,685.28 and 38,145.59 is: 52,643.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,435.65 : 91,685.28 = 38,145.59 : x
  2. Step 2: Convert to fraction form
    66,435.65/91,685.28 = 38,145.59/x
  3. Step 3: Cross multiply
    66,435.65x = 91,685.28 × 38,145.59
  4. Step 4: Simplify right side
    66,435.65x = 3,497,388,450.76
  5. Step 5: Solve for x
    x = 3,497,388,450.76/66,435.65
  6. Step 6: Final answer
    x = 52,643.25

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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.