Home / 56,142.06-77,476.11-30,991.56

Finding the Fourth Proportional to 56,142.06, 77,476.11 and 30,991.56

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Solution

The fourth proportional to 56,142.06, 77,476.11 and 30,991.56 is: 42,768.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,142.06 : 77,476.11 = 30,991.56 : x
  2. Step 2: Convert to fraction form
    56,142.06/77,476.11 = 30,991.56/x
  3. Step 3: Cross multiply
    56,142.06x = 77,476.11 × 30,991.56
  4. Step 4: Simplify right side
    56,142.06x = 2,401,105,511.63
  5. Step 5: Solve for x
    x = 2,401,105,511.63/56,142.06
  6. Step 6: Final answer
    x = 42,768.39

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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.