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Finding the Fourth Proportional to 85,169.55, 127,754.33 and 51,343.95

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Solution

The fourth proportional to 85,169.55, 127,754.33 and 51,343.95 is: 77,015.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,169.55 : 127,754.33 = 51,343.95 : x
  2. Step 2: Convert to fraction form
    85,169.55/127,754.33 = 51,343.95/x
  3. Step 3: Cross multiply
    85,169.55x = 127,754.33 × 51,343.95
  4. Step 4: Simplify right side
    85,169.55x = 6,559,411,675.08
  5. Step 5: Solve for x
    x = 6,559,411,675.08/85,169.55
  6. Step 6: Final answer
    x = 77,015.93

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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.