Home / 47,460.60-71,133.30-21,137.40

Finding the Fourth Proportional to 47,460.60, 71,133.30 and 21,137.40

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Solution

The fourth proportional to 47,460.60, 71,133.30 and 21,137.40 is: 31,680.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,460.60 : 71,133.30 = 21,137.40 : x
  2. Step 2: Convert to fraction form
    47,460.60/71,133.30 = 21,137.40/x
  3. Step 3: Cross multiply
    47,460.60x = 71,133.30 × 21,137.40
  4. Step 4: Simplify right side
    47,460.60x = 1,503,573,015.42
  5. Step 5: Solve for x
    x = 1,503,573,015.42/47,460.60
  6. Step 6: Final answer
    x = 31,680.45

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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.