Home / 47,881.20-71,821.80-31,292.40

Finding the Fourth Proportional to 47,881.20, 71,821.80 and 31,292.40

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Solution

The fourth proportional to 47,881.20, 71,821.80 and 31,292.40 is: 46,938.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,881.20 : 71,821.80 = 31,292.40 : x
  2. Step 2: Convert to fraction form
    47,881.20/71,821.80 = 31,292.40/x
  3. Step 3: Cross multiply
    47,881.20x = 71,821.80 × 31,292.40
  4. Step 4: Simplify right side
    47,881.20x = 2,247,476,494.32
  5. Step 5: Solve for x
    x = 2,247,476,494.32/47,881.20
  6. Step 6: Final answer
    x = 46,938.60

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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.