Home / 85,681.62-128,527.23-26,512.68

Finding the Fourth Proportional to 85,681.62, 128,527.23 and 26,512.68

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Solution

The fourth proportional to 85,681.62, 128,527.23 and 26,512.68 is: 39,770.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,681.62 : 128,527.23 = 26,512.68 : x
  2. Step 2: Convert to fraction form
    85,681.62/128,527.23 = 26,512.68/x
  3. Step 3: Cross multiply
    85,681.62x = 128,527.23 × 26,512.68
  4. Step 4: Simplify right side
    85,681.62x = 3,407,601,320.28
  5. Step 5: Solve for x
    x = 3,407,601,320.28/85,681.62
  6. Step 6: Final answer
    x = 39,770.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.