Home / 86,017.42-128,973.74-38,623.30

Finding the Fourth Proportional to 86,017.42, 128,973.74 and 38,623.30

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Solution

The fourth proportional to 86,017.42, 128,973.74 and 38,623.30 is: 57,911.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,017.42 : 128,973.74 = 38,623.30 : x
  2. Step 2: Convert to fraction form
    86,017.42/128,973.74 = 38,623.30/x
  3. Step 3: Cross multiply
    86,017.42x = 128,973.74 × 38,623.30
  4. Step 4: Simplify right side
    86,017.42x = 4,981,391,452.14
  5. Step 5: Solve for x
    x = 4,981,391,452.14/86,017.42
  6. Step 6: Final answer
    x = 57,911.43

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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.