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Finding the Fourth Proportional to 83,563.79, 115,275.08 and 54,879.32

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Solution

The fourth proportional to 83,563.79, 115,275.08 and 54,879.32 is: 75,705.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,563.79 : 115,275.08 = 54,879.32 : x
  2. Step 2: Convert to fraction form
    83,563.79/115,275.08 = 54,879.32/x
  3. Step 3: Cross multiply
    83,563.79x = 115,275.08 × 54,879.32
  4. Step 4: Simplify right side
    83,563.79x = 6,326,218,428.73
  5. Step 5: Solve for x
    x = 6,326,218,428.73/83,563.79
  6. Step 6: Final answer
    x = 75,705.26

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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.