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Finding the Fourth Proportional to 78,309.70, 108,085.92 and 46,496.95

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Solution

The fourth proportional to 78,309.70, 108,085.92 and 46,496.95 is: 64,176.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,309.70 : 108,085.92 = 46,496.95 : x
  2. Step 2: Convert to fraction form
    78,309.70/108,085.92 = 46,496.95/x
  3. Step 3: Cross multiply
    78,309.70x = 108,085.92 × 46,496.95
  4. Step 4: Simplify right side
    78,309.70x = 5,025,665,617.94
  5. Step 5: Solve for x
    x = 5,025,665,617.94/78,309.70
  6. Step 6: Final answer
    x = 64,176.80

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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.