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Finding the Fourth Proportional to 84,706, 127,013.40 and 28,527.40

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Solution

The fourth proportional to 84,706, 127,013.40 and 28,527.40 is: 42,775.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,706 : 127,013.40 = 28,527.40 : x
  2. Step 2: Convert to fraction form
    84,706/127,013.40 = 28,527.40/x
  3. Step 3: Cross multiply
    84,706x = 127,013.40 × 28,527.40
  4. Step 4: Simplify right side
    84,706x = 3,623,362,067.16
  5. Step 5: Solve for x
    x = 3,623,362,067.16/84,706
  6. Step 6: Final answer
    x = 42,775.74

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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.