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Finding the Fourth Proportional to 84,702.93, 127,066.10 and 28,559.09

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Solution

The fourth proportional to 84,702.93, 127,066.10 and 28,559.09 is: 42,842.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,702.93 : 127,066.10 = 28,559.09 : x
  2. Step 2: Convert to fraction form
    84,702.93/127,066.10 = 28,559.09/x
  3. Step 3: Cross multiply
    84,702.93x = 127,066.10 × 28,559.09
  4. Step 4: Simplify right side
    84,702.93x = 3,628,891,407.72
  5. Step 5: Solve for x
    x = 3,628,891,407.72/84,702.93
  6. Step 6: Final answer
    x = 42,842.57

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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.