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Finding the Fourth Proportional to 84,865, 117,134.76 and 49,075.80

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Solution

The fourth proportional to 84,865, 117,134.76 and 49,075.80 is: 67,736.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,865 : 117,134.76 = 49,075.80 : x
  2. Step 2: Convert to fraction form
    84,865/117,134.76 = 49,075.80/x
  3. Step 3: Cross multiply
    84,865x = 117,134.76 × 49,075.80
  4. Step 4: Simplify right side
    84,865x = 5,748,482,054.81
  5. Step 5: Solve for x
    x = 5,748,482,054.81/84,865
  6. Step 6: Final answer
    x = 67,736.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.