Home / 85,786.02-128,627.09-38,392.29

Finding the Fourth Proportional to 85,786.02, 128,627.09 and 38,392.29

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Solution

The fourth proportional to 85,786.02, 128,627.09 and 38,392.29 is: 57,565.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,786.02 : 128,627.09 = 38,392.29 : x
  2. Step 2: Convert to fraction form
    85,786.02/128,627.09 = 38,392.29/x
  3. Step 3: Cross multiply
    85,786.02x = 128,627.09 × 38,392.29
  4. Step 4: Simplify right side
    85,786.02x = 4,938,288,541.14
  5. Step 5: Solve for x
    x = 4,938,288,541.14/85,786.02
  6. Step 6: Final answer
    x = 57,565.19

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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.