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Finding the Fourth Proportional to 83,951.51, 115,855.16 and 45,713.15

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Solution

The fourth proportional to 83,951.51, 115,855.16 and 45,713.15 is: 63,085.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,951.51 : 115,855.16 = 45,713.15 : x
  2. Step 2: Convert to fraction form
    83,951.51/115,855.16 = 45,713.15/x
  3. Step 3: Cross multiply
    83,951.51x = 115,855.16 × 45,713.15
  4. Step 4: Simplify right side
    83,951.51x = 5,296,104,078.79
  5. Step 5: Solve for x
    x = 5,296,104,078.79/83,951.51
  6. Step 6: Final answer
    x = 63,085.27

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1.5x scale

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.