Home / 56,143.13-77,477.58-30,992.63

Finding the Fourth Proportional to 56,143.13, 77,477.58 and 30,992.63

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Solution

The fourth proportional to 56,143.13, 77,477.58 and 30,992.63 is: 42,769.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,143.13 : 77,477.58 = 30,992.63 : x
  2. Step 2: Convert to fraction form
    56,143.13/77,477.58 = 30,992.63/x
  3. Step 3: Cross multiply
    56,143.13x = 77,477.58 × 30,992.63
  4. Step 4: Simplify right side
    56,143.13x = 2,401,233,582.85
  5. Step 5: Solve for x
    x = 2,401,233,582.85/56,143.13
  6. Step 6: Final answer
    x = 42,769.86

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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.