Home / 78,990.04-109,006.28-43,180.04

Finding the Fourth Proportional to 78,990.04, 109,006.28 and 43,180.04

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Solution

The fourth proportional to 78,990.04, 109,006.28 and 43,180.04 is: 59,588.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,990.04 : 109,006.28 = 43,180.04 : x
  2. Step 2: Convert to fraction form
    78,990.04/109,006.28 = 43,180.04/x
  3. Step 3: Cross multiply
    78,990.04x = 109,006.28 × 43,180.04
  4. Step 4: Simplify right side
    78,990.04x = 4,706,895,093.57
  5. Step 5: Solve for x
    x = 4,706,895,093.57/78,990.04
  6. Step 6: Final answer
    x = 59,588.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.