Home / 56,000.21-77,280.30-30,849.71

Finding the Fourth Proportional to 56,000.21, 77,280.30 and 30,849.71

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Solution

The fourth proportional to 56,000.21, 77,280.30 and 30,849.71 is: 42,572.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,000.21 : 77,280.30 = 30,849.71 : x
  2. Step 2: Convert to fraction form
    56,000.21/77,280.30 = 30,849.71/x
  3. Step 3: Cross multiply
    56,000.21x = 77,280.30 × 30,849.71
  4. Step 4: Simplify right side
    56,000.21x = 2,384,074,843.71
  5. Step 5: Solve for x
    x = 2,384,074,843.71/56,000.21
  6. Step 6: Final answer
    x = 42,572.61

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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.