Home / 71,528.64-98,708.16-39,697.92

Finding the Fourth Proportional to 71,528.64, 98,708.16 and 39,697.92

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Solution

The fourth proportional to 71,528.64, 98,708.16 and 39,697.92 is: 54,782.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,528.64 : 98,708.16 = 39,697.92 : x
  2. Step 2: Convert to fraction form
    71,528.64/98,708.16 = 39,697.92/x
  3. Step 3: Cross multiply
    71,528.64x = 98,708.16 × 39,697.92
  4. Step 4: Simplify right side
    71,528.64x = 3,918,508,639.03
  5. Step 5: Solve for x
    x = 3,918,508,639.03/71,528.64
  6. Step 6: Final answer
    x = 54,782.37

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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.