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Finding the Fourth Proportional to 68,366.70, 102,505.52 and 28,374.66

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Solution

The fourth proportional to 68,366.70, 102,505.52 and 28,374.66 is: 42,543.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,366.70 : 102,505.52 = 28,374.66 : x
  2. Step 2: Convert to fraction form
    68,366.70/102,505.52 = 28,374.66/x
  3. Step 3: Cross multiply
    68,366.70x = 102,505.52 × 28,374.66
  4. Step 4: Simplify right side
    68,366.70x = 2,908,559,349.06
  5. Step 5: Solve for x
    x = 2,908,559,349.06/68,366.70
  6. Step 6: Final answer
    x = 42,543.51

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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.