Home / 78,929.67-108,930.45-43,125.06

Finding the Fourth Proportional to 78,929.67, 108,930.45 and 43,125.06

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Solution

The fourth proportional to 78,929.67, 108,930.45 and 43,125.06 is: 59,516.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,929.67 : 108,930.45 = 43,125.06 : x
  2. Step 2: Convert to fraction form
    78,929.67/108,930.45 = 43,125.06/x
  3. Step 3: Cross multiply
    78,929.67x = 108,930.45 × 43,125.06
  4. Step 4: Simplify right side
    78,929.67x = 4,697,632,192.08
  5. Step 5: Solve for x
    x = 4,697,632,192.08/78,929.67
  6. Step 6: Final answer
    x = 59,516.68

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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.