Home / 56,143.20-77,477.10-30,992.64

Finding the Fourth Proportional to 56,143.20, 77,477.10 and 30,992.64

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Solution

The fourth proportional to 56,143.20, 77,477.10 and 30,992.64 is: 42,769.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,143.20 : 77,477.10 = 30,992.64 : x
  2. Step 2: Convert to fraction form
    56,143.20/77,477.10 = 30,992.64/x
  3. Step 3: Cross multiply
    56,143.20x = 77,477.10 × 30,992.64
  4. Step 4: Simplify right side
    56,143.20x = 2,401,219,868.54
  5. Step 5: Solve for x
    x = 2,401,219,868.54/56,143.20
  6. Step 6: Final answer
    x = 42,769.56

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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.