Home / 78,652.42-117,952.66-31,279.26

Finding the Fourth Proportional to 78,652.42, 117,952.66 and 31,279.26

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Solution

The fourth proportional to 78,652.42, 117,952.66 and 31,279.26 is: 46,908.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,652.42 : 117,952.66 = 31,279.26 : x
  2. Step 2: Convert to fraction form
    78,652.42/117,952.66 = 31,279.26/x
  3. Step 3: Cross multiply
    78,652.42x = 117,952.66 × 31,279.26
  4. Step 4: Simplify right side
    78,652.42x = 3,689,472,225.31
  5. Step 5: Solve for x
    x = 3,689,472,225.31/78,652.42
  6. Step 6: Final answer
    x = 46,908.57

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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.