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Finding the Fourth Proportional to 84,936, 127,535.52 and 45,570

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Solution

The fourth proportional to 84,936, 127,535.52 and 45,570 is: 68,425.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,936 : 127,535.52 = 45,570 : x
  2. Step 2: Convert to fraction form
    84,936/127,535.52 = 45,570/x
  3. Step 3: Cross multiply
    84,936x = 127,535.52 × 45,570
  4. Step 4: Simplify right side
    84,936x = 5,811,793,646.40
  5. Step 5: Solve for x
    x = 5,811,793,646.40/84,936
  6. Step 6: Final answer
    x = 68,425.56

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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.