Home / 56,383.24-77,808.86-30,890.51

Finding the Fourth Proportional to 56,383.24, 77,808.86 and 30,890.51

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Solution

The fourth proportional to 56,383.24, 77,808.86 and 30,890.51 is: 42,628.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,383.24 : 77,808.86 = 30,890.51 : x
  2. Step 2: Convert to fraction form
    56,383.24/77,808.86 = 30,890.51/x
  3. Step 3: Cross multiply
    56,383.24x = 77,808.86 × 30,890.51
  4. Step 4: Simplify right side
    56,383.24x = 2,403,555,124.83
  5. Step 5: Solve for x
    x = 2,403,555,124.83/56,383.24
  6. Step 6: Final answer
    x = 42,628.90

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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.