Home / 85,617.77-128,427.52-38,235.27

Finding the Fourth Proportional to 85,617.77, 128,427.52 and 38,235.27

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Solution

The fourth proportional to 85,617.77, 128,427.52 and 38,235.27 is: 57,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,617.77 : 128,427.52 = 38,235.27 : x
  2. Step 2: Convert to fraction form
    85,617.77/128,427.52 = 38,235.27/x
  3. Step 3: Cross multiply
    85,617.77x = 128,427.52 × 38,235.27
  4. Step 4: Simplify right side
    85,617.77x = 4,910,461,360.34
  5. Step 5: Solve for x
    x = 4,910,461,360.34/85,617.77
  6. Step 6: Final answer
    x = 57,353.30

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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.