Home / 75,145.64-103,700.78-43,314.36

Finding the Fourth Proportional to 75,145.64, 103,700.78 and 43,314.36

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Solution

The fourth proportional to 75,145.64, 103,700.78 and 43,314.36 is: 59,773.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,145.64 : 103,700.78 = 43,314.36 : x
  2. Step 2: Convert to fraction form
    75,145.64/103,700.78 = 43,314.36/x
  3. Step 3: Cross multiply
    75,145.64x = 103,700.78 × 43,314.36
  4. Step 4: Simplify right side
    75,145.64x = 4,491,732,917.20
  5. Step 5: Solve for x
    x = 4,491,732,917.20/75,145.64
  6. Step 6: Final answer
    x = 59,773.70

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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.