Home / 56,487.11-77,949.57-30,992.90

Finding the Fourth Proportional to 56,487.11, 77,949.57 and 30,992.90

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Solution

The fourth proportional to 56,487.11, 77,949.57 and 30,992.90 is: 42,768.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,487.11 : 77,949.57 = 30,992.90 : x
  2. Step 2: Convert to fraction form
    56,487.11/77,949.57 = 30,992.90/x
  3. Step 3: Cross multiply
    56,487.11x = 77,949.57 × 30,992.90
  4. Step 4: Simplify right side
    56,487.11x = 2,415,882,838.31
  5. Step 5: Solve for x
    x = 2,415,882,838.31/56,487.11
  6. Step 6: Final answer
    x = 42,768.75

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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.