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Finding the Fourth Proportional to 78,792.17, 118,210.13 and 43,756.43

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Solution

The fourth proportional to 78,792.17, 118,210.13 and 43,756.43 is: 65,646.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,792.17 : 118,210.13 = 43,756.43 : x
  2. Step 2: Convert to fraction form
    78,792.17/118,210.13 = 43,756.43/x
  3. Step 3: Cross multiply
    78,792.17x = 118,210.13 × 43,756.43
  4. Step 4: Simplify right side
    78,792.17x = 5,172,453,059.85
  5. Step 5: Solve for x
    x = 5,172,453,059.85/78,792.17
  6. Step 6: Final answer
    x = 65,646.79

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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.