Home / 56,486.93-77,949.32-30,992.72

Finding the Fourth Proportional to 56,486.93, 77,949.32 and 30,992.72

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Solution

The fourth proportional to 56,486.93, 77,949.32 and 30,992.72 is: 42,768.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,486.93 : 77,949.32 = 30,992.72 : x
  2. Step 2: Convert to fraction form
    56,486.93/77,949.32 = 30,992.72/x
  3. Step 3: Cross multiply
    56,486.93x = 77,949.32 × 30,992.72
  4. Step 4: Simplify right side
    56,486.93x = 2,415,860,904.24
  5. Step 5: Solve for x
    x = 2,415,860,904.24/56,486.93
  6. Step 6: Final answer
    x = 42,768.50

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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.