Home / 92,879.12-128,172.06-50,437.96

Finding the Fourth Proportional to 92,879.12, 128,172.06 and 50,437.96

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Solution

The fourth proportional to 92,879.12, 128,172.06 and 50,437.96 is: 69,603.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,879.12 : 128,172.06 = 50,437.96 : x
  2. Step 2: Convert to fraction form
    92,879.12/128,172.06 = 50,437.96/x
  3. Step 3: Cross multiply
    92,879.12x = 128,172.06 × 50,437.96
  4. Step 4: Simplify right side
    92,879.12x = 6,464,736,914.97
  5. Step 5: Solve for x
    x = 6,464,736,914.97/92,879.12
  6. Step 6: Final answer
    x = 69,603.77

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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.