Home / 85,330.20-127,810.60-61,905

Finding the Fourth Proportional to 85,330.20, 127,810.60 and 61,905

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Solution

The fourth proportional to 85,330.20, 127,810.60 and 61,905 is: 92,723.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,330.20 : 127,810.60 = 61,905 : x
  2. Step 2: Convert to fraction form
    85,330.20/127,810.60 = 61,905/x
  3. Step 3: Cross multiply
    85,330.20x = 127,810.60 × 61,905
  4. Step 4: Simplify right side
    85,330.20x = 7,912,115,193
  5. Step 5: Solve for x
    x = 7,912,115,193/85,330.20
  6. Step 6: Final answer
    x = 92,723.50

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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.