Home / 85,864,928.72-128,770,067.64-28,346,490.32

Finding the Fourth Proportional to 85,864,928.72, 128,770,067.64 and 28,346,490.32

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Solution

The fourth proportional to 85,864,928.72, 128,770,067.64 and 28,346,490.32 is: 42,510,714.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,864,928.72 : 128,770,067.64 = 28,346,490.32 : x
  2. Step 2: Convert to fraction form
    85,864,928.72/128,770,067.64 = 28,346,490.32/x
  3. Step 3: Cross multiply
    85,864,928.72x = 128,770,067.64 × 28,346,490.32
  4. Step 4: Simplify right side
    85,864,928.72x = 3,650,179,475,863,005.50
  5. Step 5: Solve for x
    x = 3,650,179,475,863,005.50/85,864,928.72
  6. Step 6: Final answer
    x = 42,510,714.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.