Home / 81,528.39-112,536.81-51,364.26

Finding the Fourth Proportional to 81,528.39, 112,536.81 and 51,364.26

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Solution

The fourth proportional to 81,528.39, 112,536.81 and 51,364.26 is: 70,900.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,528.39 : 112,536.81 = 51,364.26 : x
  2. Step 2: Convert to fraction form
    81,528.39/112,536.81 = 51,364.26/x
  3. Step 3: Cross multiply
    81,528.39x = 112,536.81 × 51,364.26
  4. Step 4: Simplify right side
    81,528.39x = 5,780,369,968.41
  5. Step 5: Solve for x
    x = 5,780,369,968.41/81,528.39
  6. Step 6: Final answer
    x = 70,900.09

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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.