Home / 75,028.10-103,489.88-48,128

Finding the Fourth Proportional to 75,028.10, 103,489.88 and 48,128

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Solution

The fourth proportional to 75,028.10, 103,489.88 and 48,128 is: 66,385.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,028.10 : 103,489.88 = 48,128 : x
  2. Step 2: Convert to fraction form
    75,028.10/103,489.88 = 48,128/x
  3. Step 3: Cross multiply
    75,028.10x = 103,489.88 × 48,128
  4. Step 4: Simplify right side
    75,028.10x = 4,980,760,944.64
  5. Step 5: Solve for x
    x = 4,980,760,944.64/75,028.10
  6. Step 6: Final answer
    x = 66,385.27

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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.