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Finding the Fourth Proportional to 68,068.86, 102,041.04 and 28,628.76

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Solution

The fourth proportional to 68,068.86, 102,041.04 and 28,628.76 is: 42,916.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,068.86 : 102,041.04 = 28,628.76 : x
  2. Step 2: Convert to fraction form
    68,068.86/102,041.04 = 28,628.76/x
  3. Step 3: Cross multiply
    68,068.86x = 102,041.04 × 28,628.76
  4. Step 4: Simplify right side
    68,068.86x = 2,921,308,444.31
  5. Step 5: Solve for x
    x = 2,921,308,444.31/68,068.86
  6. Step 6: Final answer
    x = 42,916.96

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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.