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Finding the Fourth Proportional to 74,479.80, 102,814.38 and 52,983.48

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Solution

The fourth proportional to 74,479.80, 102,814.38 and 52,983.48 is: 73,140.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,479.80 : 102,814.38 = 52,983.48 : x
  2. Step 2: Convert to fraction form
    74,479.80/102,814.38 = 52,983.48/x
  3. Step 3: Cross multiply
    74,479.80x = 102,814.38 × 52,983.48
  4. Step 4: Simplify right side
    74,479.80x = 5,447,463,646.44
  5. Step 5: Solve for x
    x = 5,447,463,646.44/74,479.80
  6. Step 6: Final answer
    x = 73,140.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.