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Finding the Fourth Proportional to 84,075.62, 115,958.72 and 53,863.74

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Solution

The fourth proportional to 84,075.62, 115,958.72 and 53,863.74 is: 74,289.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,075.62 : 115,958.72 = 53,863.74 : x
  2. Step 2: Convert to fraction form
    84,075.62/115,958.72 = 53,863.74/x
  3. Step 3: Cross multiply
    84,075.62x = 115,958.72 × 53,863.74
  4. Step 4: Simplify right side
    84,075.62x = 6,245,970,479.47
  5. Step 5: Solve for x
    x = 6,245,970,479.47/84,075.62
  6. Step 6: Final answer
    x = 74,289.91

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1.5x scale

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.