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Finding the Fourth Proportional to 83,755.95, 115,583.67 and 45,515.81

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Solution

The fourth proportional to 83,755.95, 115,583.67 and 45,515.81 is: 62,812.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,755.95 : 115,583.67 = 45,515.81 : x
  2. Step 2: Convert to fraction form
    83,755.95/115,583.67 = 45,515.81/x
  3. Step 3: Cross multiply
    83,755.95x = 115,583.67 × 45,515.81
  4. Step 4: Simplify right side
    83,755.95x = 5,260,883,784.90
  5. Step 5: Solve for x
    x = 5,260,883,784.90/83,755.95
  6. Step 6: Final answer
    x = 62,812.06

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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.