Home / 85,089.08-127,603.25-28,152.56

Finding the Fourth Proportional to 85,089.08, 127,603.25 and 28,152.56

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Solution

The fourth proportional to 85,089.08, 127,603.25 and 28,152.56 is: 42,218.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,089.08 : 127,603.25 = 28,152.56 : x
  2. Step 2: Convert to fraction form
    85,089.08/127,603.25 = 28,152.56/x
  3. Step 3: Cross multiply
    85,089.08x = 127,603.25 × 28,152.56
  4. Step 4: Simplify right side
    85,089.08x = 3,592,358,435.64
  5. Step 5: Solve for x
    x = 3,592,358,435.64/85,089.08
  6. Step 6: Final answer
    x = 42,218.79

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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.