Home / 77,971.05-116,757.32-42,872.13

Finding the Fourth Proportional to 77,971.05, 116,757.32 and 42,872.13

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Solution

The fourth proportional to 77,971.05, 116,757.32 and 42,872.13 is: 64,198.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,971.05 : 116,757.32 = 42,872.13 : x
  2. Step 2: Convert to fraction form
    77,971.05/116,757.32 = 42,872.13/x
  3. Step 3: Cross multiply
    77,971.05x = 116,757.32 × 42,872.13
  4. Step 4: Simplify right side
    77,971.05x = 5,005,634,787.13
  5. Step 5: Solve for x
    x = 5,005,634,787.13/77,971.05
  6. Step 6: Final answer
    x = 64,198.63

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1.5x scale

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.