Home / 78,929.13-108,923.81-43,121.46

Finding the Fourth Proportional to 78,929.13, 108,923.81 and 43,121.46

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Solution

The fourth proportional to 78,929.13, 108,923.81 and 43,121.46 is: 59,508.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,929.13 : 108,923.81 = 43,121.46 : x
  2. Step 2: Convert to fraction form
    78,929.13/108,923.81 = 43,121.46/x
  3. Step 3: Cross multiply
    78,929.13x = 108,923.81 × 43,121.46
  4. Step 4: Simplify right side
    78,929.13x = 4,696,953,500.36
  5. Step 5: Solve for x
    x = 4,696,953,500.36/78,929.13
  6. Step 6: Final answer
    x = 59,508.49

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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.