Home / 42,780.54-64,163.52-11,608.50

Finding the Fourth Proportional to 42,780.54, 64,163.52 and 11,608.50

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Solution

The fourth proportional to 42,780.54, 64,163.52 and 11,608.50 is: 17,410.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,780.54 : 64,163.52 = 11,608.50 : x
  2. Step 2: Convert to fraction form
    42,780.54/64,163.52 = 11,608.50/x
  3. Step 3: Cross multiply
    42,780.54x = 64,163.52 × 11,608.50
  4. Step 4: Simplify right side
    42,780.54x = 744,842,221.92
  5. Step 5: Solve for x
    x = 744,842,221.92/42,780.54
  6. Step 6: Final answer
    x = 17,410.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.