Home / 75,019.40-103,478.00-48,119.30

Finding the Fourth Proportional to 75,019.40, 103,478.00 and 48,119.30

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Solution

The fourth proportional to 75,019.40, 103,478.00 and 48,119.30 is: 66,373.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,019.40 : 103,478.00 = 48,119.30 : x
  2. Step 2: Convert to fraction form
    75,019.40/103,478.00 = 48,119.30/x
  3. Step 3: Cross multiply
    75,019.40x = 103,478.00 × 48,119.30
  4. Step 4: Simplify right side
    75,019.40x = 4,979,288,167.41
  5. Step 5: Solve for x
    x = 4,979,288,167.41/75,019.40
  6. Step 6: Final answer
    x = 66,373.34

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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.