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Finding the Fourth Proportional to 83,346.70, 115,017.51 and 45,620.50

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Solution

The fourth proportional to 83,346.70, 115,017.51 and 45,620.50 is: 62,955.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,346.70 : 115,017.51 = 45,620.50 : x
  2. Step 2: Convert to fraction form
    83,346.70/115,017.51 = 45,620.50/x
  3. Step 3: Cross multiply
    83,346.70x = 115,017.51 × 45,620.50
  4. Step 4: Simplify right side
    83,346.70x = 5,247,156,314.96
  5. Step 5: Solve for x
    x = 5,247,156,314.96/83,346.70
  6. Step 6: Final answer
    x = 62,955.78

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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.