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Finding the Fourth Proportional to 68,303.45, 102,430.55 and 28,863.63

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Solution

The fourth proportional to 68,303.45, 102,430.55 and 28,863.63 is: 43,285.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,303.45 : 102,430.55 = 28,863.63 : x
  2. Step 2: Convert to fraction form
    68,303.45/102,430.55 = 28,863.63/x
  3. Step 3: Cross multiply
    68,303.45x = 102,430.55 × 28,863.63
  4. Step 4: Simplify right side
    68,303.45x = 2,956,517,568.06
  5. Step 5: Solve for x
    x = 2,956,517,568.06/68,303.45
  6. Step 6: Final answer
    x = 43,285.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.