Home / 78,829.94-118,252.20-31,433.60

Finding the Fourth Proportional to 78,829.94, 118,252.20 and 31,433.60

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Solution

The fourth proportional to 78,829.94, 118,252.20 and 31,433.60 is: 47,153.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,829.94 : 118,252.20 = 31,433.60 : x
  2. Step 2: Convert to fraction form
    78,829.94/118,252.20 = 31,433.60/x
  3. Step 3: Cross multiply
    78,829.94x = 118,252.20 × 31,433.60
  4. Step 4: Simplify right side
    78,829.94x = 3,717,092,353.92
  5. Step 5: Solve for x
    x = 3,717,092,353.92/78,829.94
  6. Step 6: Final answer
    x = 47,153.31

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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.