Home / 85,591.08-128,417.02-38,201.88

Finding the Fourth Proportional to 85,591.08, 128,417.02 and 38,201.88

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Solution

The fourth proportional to 85,591.08, 128,417.02 and 38,201.88 is: 57,316.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,591.08 : 128,417.02 = 38,201.88 : x
  2. Step 2: Convert to fraction form
    85,591.08/128,417.02 = 38,201.88/x
  3. Step 3: Cross multiply
    85,591.08x = 128,417.02 × 38,201.88
  4. Step 4: Simplify right side
    85,591.08x = 4,905,771,588.00
  5. Step 5: Solve for x
    x = 4,905,771,588.00/85,591.08
  6. Step 6: Final answer
    x = 57,316.39

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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.