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Finding the Fourth Proportional to 45,384.87, 68,068.31 and 43,134.47

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Solution

The fourth proportional to 45,384.87, 68,068.31 and 43,134.47 is: 64,693.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,384.87 : 68,068.31 = 43,134.47 : x
  2. Step 2: Convert to fraction form
    45,384.87/68,068.31 = 43,134.47/x
  3. Step 3: Cross multiply
    45,384.87x = 68,068.31 × 43,134.47
  4. Step 4: Simplify right side
    45,384.87x = 2,936,090,259.97
  5. Step 5: Solve for x
    x = 2,936,090,259.97/45,384.87
  6. Step 6: Final answer
    x = 64,693.15

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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.