Home / 47,171.52-70,756.08-13,890.72

Finding the Fourth Proportional to 47,171.52, 70,756.08 and 13,890.72

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Solution

The fourth proportional to 47,171.52, 70,756.08 and 13,890.72 is: 20,835.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,171.52 : 70,756.08 = 13,890.72 : x
  2. Step 2: Convert to fraction form
    47,171.52/70,756.08 = 13,890.72/x
  3. Step 3: Cross multiply
    47,171.52x = 70,756.08 × 13,890.72
  4. Step 4: Simplify right side
    47,171.52x = 982,852,895.58
  5. Step 5: Solve for x
    x = 982,852,895.58/47,171.52
  6. Step 6: Final answer
    x = 20,835.73

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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.