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Finding the Fourth Proportional to 77,885.08, 107,481.34 and 42,075.08

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Solution

The fourth proportional to 77,885.08, 107,481.34 and 42,075.08 is: 58,063.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,885.08 : 107,481.34 = 42,075.08 : x
  2. Step 2: Convert to fraction form
    77,885.08/107,481.34 = 42,075.08/x
  3. Step 3: Cross multiply
    77,885.08x = 107,481.34 × 42,075.08
  4. Step 4: Simplify right side
    77,885.08x = 4,522,285,979.01
  5. Step 5: Solve for x
    x = 4,522,285,979.01/77,885.08
  6. Step 6: Final answer
    x = 58,063.57

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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.