Home / 78,834.12-108,792.18-47,021.46

Finding the Fourth Proportional to 78,834.12, 108,792.18 and 47,021.46

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Solution

The fourth proportional to 78,834.12, 108,792.18 and 47,021.46 is: 64,890.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,834.12 : 108,792.18 = 47,021.46 : x
  2. Step 2: Convert to fraction form
    78,834.12/108,792.18 = 47,021.46/x
  3. Step 3: Cross multiply
    78,834.12x = 108,792.18 × 47,021.46
  4. Step 4: Simplify right side
    78,834.12x = 5,115,567,140.18
  5. Step 5: Solve for x
    x = 5,115,567,140.18/78,834.12
  6. Step 6: Final answer
    x = 64,890.27

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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.