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Finding the Fourth Proportional to 83,711.60, 115,552.33 and 55,426.40

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Solution

The fourth proportional to 83,711.60, 115,552.33 and 55,426.40 is: 76,508.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,711.60 : 115,552.33 = 55,426.40 : x
  2. Step 2: Convert to fraction form
    83,711.60/115,552.33 = 55,426.40/x
  3. Step 3: Cross multiply
    83,711.60x = 115,552.33 × 55,426.40
  4. Step 4: Simplify right side
    83,711.60x = 6,404,649,663.51
  5. Step 5: Solve for x
    x = 6,404,649,663.51/83,711.60
  6. Step 6: Final answer
    x = 76,508.51

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.