Home / 85,411.02-128,131.11-38,043.03

Finding the Fourth Proportional to 85,411.02, 128,131.11 and 38,043.03

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Solution

The fourth proportional to 85,411.02, 128,131.11 and 38,043.03 is: 57,071.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,411.02 : 128,131.11 = 38,043.03 : x
  2. Step 2: Convert to fraction form
    85,411.02/128,131.11 = 38,043.03/x
  3. Step 3: Cross multiply
    85,411.02x = 128,131.11 × 38,043.03
  4. Step 4: Simplify right side
    85,411.02x = 4,874,495,661.66
  5. Step 5: Solve for x
    x = 4,874,495,661.66/85,411.02
  6. Step 6: Final answer
    x = 57,071.04

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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.