Home / 85,010.20-127,515.30-45,644.20

Finding the Fourth Proportional to 85,010.20, 127,515.30 and 45,644.20

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Solution

The fourth proportional to 85,010.20, 127,515.30 and 45,644.20 is: 68,466.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,010.20 : 127,515.30 = 45,644.20 : x
  2. Step 2: Convert to fraction form
    85,010.20/127,515.30 = 45,644.20/x
  3. Step 3: Cross multiply
    85,010.20x = 127,515.30 × 45,644.20
  4. Step 4: Simplify right side
    85,010.20x = 5,820,333,856.26
  5. Step 5: Solve for x
    x = 5,820,333,856.26/85,010.20
  6. Step 6: Final answer
    x = 68,466.30

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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.