Home / 66,148.55-91,282.38-39,290.35

Finding the Fourth Proportional to 66,148.55, 91,282.38 and 39,290.35

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Solution

The fourth proportional to 66,148.55, 91,282.38 and 39,290.35 is: 54,219.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,148.55 : 91,282.38 = 39,290.35 : x
  2. Step 2: Convert to fraction form
    66,148.55/91,282.38 = 39,290.35/x
  3. Step 3: Cross multiply
    66,148.55x = 91,282.38 × 39,290.35
  4. Step 4: Simplify right side
    66,148.55x = 3,586,516,659.03
  5. Step 5: Solve for x
    x = 3,586,516,659.03/66,148.55
  6. Step 6: Final answer
    x = 54,219.13

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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.