Home / 92,976.20-128,368.94-71,427.57

Finding the Fourth Proportional to 92,976.20, 128,368.94 and 71,427.57

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Solution

The fourth proportional to 92,976.20, 128,368.94 and 71,427.57 is: 98,617.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,976.20 : 128,368.94 = 71,427.57 : x
  2. Step 2: Convert to fraction form
    92,976.20/128,368.94 = 71,427.57/x
  3. Step 3: Cross multiply
    92,976.20x = 128,368.94 × 71,427.57
  4. Step 4: Simplify right side
    92,976.20x = 9,169,081,447.68
  5. Step 5: Solve for x
    x = 9,169,081,447.68/92,976.20
  6. Step 6: Final answer
    x = 98,617.51

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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.