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Finding the Fourth Proportional to 85,083.88, 127,485.40 and 49,445.16

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Solution

The fourth proportional to 85,083.88, 127,485.40 and 49,445.16 is: 74,086.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,083.88 : 127,485.40 = 49,445.16 : x
  2. Step 2: Convert to fraction form
    85,083.88/127,485.40 = 49,445.16/x
  3. Step 3: Cross multiply
    85,083.88x = 127,485.40 × 49,445.16
  4. Step 4: Simplify right side
    85,083.88x = 6,303,536,000.66
  5. Step 5: Solve for x
    x = 6,303,536,000.66/85,083.88
  6. Step 6: Final answer
    x = 74,086.14

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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.