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Finding the Fourth Proportional to 84,757.96, 127,140.54 and 28,599.40

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Solution

The fourth proportional to 84,757.96, 127,140.54 and 28,599.40 is: 42,900.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,757.96 : 127,140.54 = 28,599.40 : x
  2. Step 2: Convert to fraction form
    84,757.96/127,140.54 = 28,599.40/x
  3. Step 3: Cross multiply
    84,757.96x = 127,140.54 × 28,599.40
  4. Step 4: Simplify right side
    84,757.96x = 3,636,143,159.68
  5. Step 5: Solve for x
    x = 3,636,143,159.68/84,757.96
  6. Step 6: Final answer
    x = 42,900.31

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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.