Home / 78,921.20-118,381.80-23,510

Finding the Fourth Proportional to 78,921.20, 118,381.80 and 23,510

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Solution

The fourth proportional to 78,921.20, 118,381.80 and 23,510 is: 35,265

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,921.20 : 118,381.80 = 23,510 : x
  2. Step 2: Convert to fraction form
    78,921.20/118,381.80 = 23,510/x
  3. Step 3: Cross multiply
    78,921.20x = 118,381.80 × 23,510
  4. Step 4: Simplify right side
    78,921.20x = 2,783,156,118
  5. Step 5: Solve for x
    x = 2,783,156,118/78,921.20
  6. Step 6: Final answer
    x = 35,265

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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.