Home / 30,951,171.72-42,667,600.50-21,629,801.52

Finding the Fourth Proportional to 30,951,171.72, 42,667,600.50 and 21,629,801.52

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Solution

The fourth proportional to 30,951,171.72, 42,667,600.50 and 21,629,801.52 is: 29,817,666.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,951,171.72 : 42,667,600.50 = 21,629,801.52 : x
  2. Step 2: Convert to fraction form
    30,951,171.72/42,667,600.50 = 21,629,801.52/x
  3. Step 3: Cross multiply
    30,951,171.72x = 42,667,600.50 × 21,629,801.52
  4. Step 4: Simplify right side
    30,951,171.72x = 922,891,730,149,652.75
  5. Step 5: Solve for x
    x = 922,891,730,149,652.75/30,951,171.72
  6. Step 6: Final answer
    x = 29,817,666.95

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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.