Home / 42,928.76-64,390.02-11,761.56

Finding the Fourth Proportional to 42,928.76, 64,390.02 and 11,761.56

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Solution

The fourth proportional to 42,928.76, 64,390.02 and 11,761.56 is: 17,641.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,928.76 : 64,390.02 = 11,761.56 : x
  2. Step 2: Convert to fraction form
    42,928.76/64,390.02 = 11,761.56/x
  3. Step 3: Cross multiply
    42,928.76x = 64,390.02 × 11,761.56
  4. Step 4: Simplify right side
    42,928.76x = 757,327,083.63
  5. Step 5: Solve for x
    x = 757,327,083.63/42,928.76
  6. Step 6: Final answer
    x = 17,641.49

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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.