Home / 71,653.19-98,880.68-39,821.45

Finding the Fourth Proportional to 71,653.19, 98,880.68 and 39,821.45

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Solution

The fourth proportional to 71,653.19, 98,880.68 and 39,821.45 is: 54,953.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,653.19 : 98,880.68 = 39,821.45 : x
  2. Step 2: Convert to fraction form
    71,653.19/98,880.68 = 39,821.45/x
  3. Step 3: Cross multiply
    71,653.19x = 98,880.68 × 39,821.45
  4. Step 4: Simplify right side
    71,653.19x = 3,937,571,361.08
  5. Step 5: Solve for x
    x = 3,937,571,361.08/71,653.19
  6. Step 6: Final answer
    x = 54,953.19

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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.