Home / 56,141.22-77,474.93-30,990.70

Finding the Fourth Proportional to 56,141.22, 77,474.93 and 30,990.70

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Solution

The fourth proportional to 56,141.22, 77,474.93 and 30,990.70 is: 42,767.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,141.22 : 77,474.93 = 30,990.70 : x
  2. Step 2: Convert to fraction form
    56,141.22/77,474.93 = 30,990.70/x
  3. Step 3: Cross multiply
    56,141.22x = 77,474.93 × 30,990.70
  4. Step 4: Simplify right side
    56,141.22x = 2,401,002,313.15
  5. Step 5: Solve for x
    x = 2,401,002,313.15/56,141.22
  6. Step 6: Final answer
    x = 42,767.19

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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.