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Finding the Fourth Proportional to 68,303.13, 102,430.08 and 28,863.32

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Solution

The fourth proportional to 68,303.13, 102,430.08 and 28,863.32 is: 43,284.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,303.13 : 102,430.08 = 28,863.32 : x
  2. Step 2: Convert to fraction form
    68,303.13/102,430.08 = 28,863.32/x
  3. Step 3: Cross multiply
    68,303.13x = 102,430.08 × 28,863.32
  4. Step 4: Simplify right side
    68,303.13x = 2,956,472,176.67
  5. Step 5: Solve for x
    x = 2,956,472,176.67/68,303.13
  6. Step 6: Final answer
    x = 43,284.58

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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.