Home / 89,809,920.96-123,956,918.64-56,749,181.28

Finding the Fourth Proportional to 89,809,920.96, 123,956,918.64 and 56,749,181.28

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Solution

The fourth proportional to 89,809,920.96, 123,956,918.64 and 56,749,181.28 is: 78,326,019.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,809,920.96 : 123,956,918.64 = 56,749,181.28 : x
  2. Step 2: Convert to fraction form
    89,809,920.96/123,956,918.64 = 56,749,181.28/x
  3. Step 3: Cross multiply
    89,809,920.96x = 123,956,918.64 × 56,749,181.28
  4. Step 4: Simplify right side
    89,809,920.96x = 7,034,453,646,811,571
  5. Step 5: Solve for x
    x = 7,034,453,646,811,571/89,809,920.96
  6. Step 6: Final answer
    x = 78,326,019.79

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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.