Home / 75,139.28-103,703.60-42,873.74

Finding the Fourth Proportional to 75,139.28, 103,703.60 and 42,873.74

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Solution

The fourth proportional to 75,139.28, 103,703.60 and 42,873.74 is: 59,172.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,139.28 : 103,703.60 = 42,873.74 : x
  2. Step 2: Convert to fraction form
    75,139.28/103,703.60 = 42,873.74/x
  3. Step 3: Cross multiply
    75,139.28x = 103,703.60 × 42,873.74
  4. Step 4: Simplify right side
    75,139.28x = 4,446,161,183.46
  5. Step 5: Solve for x
    x = 4,446,161,183.46/75,139.28
  6. Step 6: Final answer
    x = 59,172.26

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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.