Home / 75,419.02-104,079.12-41,428.30

Finding the Fourth Proportional to 75,419.02, 104,079.12 and 41,428.30

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Solution

The fourth proportional to 75,419.02, 104,079.12 and 41,428.30 is: 57,171.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,419.02 : 104,079.12 = 41,428.30 : x
  2. Step 2: Convert to fraction form
    75,419.02/104,079.12 = 41,428.30/x
  3. Step 3: Cross multiply
    75,419.02x = 104,079.12 × 41,428.30
  4. Step 4: Simplify right side
    75,419.02x = 4,311,821,007.10
  5. Step 5: Solve for x
    x = 4,311,821,007.10/75,419.02
  6. Step 6: Final answer
    x = 57,171.53

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1.5x scale

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.