Home / 56,455.94-77,910.27-30,960.78

Finding the Fourth Proportional to 56,455.94, 77,910.27 and 30,960.78

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Solution

The fourth proportional to 56,455.94, 77,910.27 and 30,960.78 is: 42,726.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,455.94 : 77,910.27 = 30,960.78 : x
  2. Step 2: Convert to fraction form
    56,455.94/77,910.27 = 30,960.78/x
  3. Step 3: Cross multiply
    56,455.94x = 77,910.27 × 30,960.78
  4. Step 4: Simplify right side
    56,455.94x = 2,412,162,729.21
  5. Step 5: Solve for x
    x = 2,412,162,729.21/56,455.94
  6. Step 6: Final answer
    x = 42,726.47

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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.