Home / 72,984.83-100,719.79-42,788.03

Finding the Fourth Proportional to 72,984.83, 100,719.79 and 42,788.03

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Solution

The fourth proportional to 72,984.83, 100,719.79 and 42,788.03 is: 59,047.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,984.83 : 100,719.79 = 42,788.03 : x
  2. Step 2: Convert to fraction form
    72,984.83/100,719.79 = 42,788.03/x
  3. Step 3: Cross multiply
    72,984.83x = 100,719.79 × 42,788.03
  4. Step 4: Simplify right side
    72,984.83x = 4,309,600,785.54
  5. Step 5: Solve for x
    x = 4,309,600,785.54/72,984.83
  6. Step 6: Final answer
    x = 59,047.90

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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.