Home / 78,323.05-108,087.73-42,512.97

Finding the Fourth Proportional to 78,323.05, 108,087.73 and 42,512.97

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Solution

The fourth proportional to 78,323.05, 108,087.73 and 42,512.97 is: 58,668.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,323.05 : 108,087.73 = 42,512.97 : x
  2. Step 2: Convert to fraction form
    78,323.05/108,087.73 = 42,512.97/x
  3. Step 3: Cross multiply
    78,323.05x = 108,087.73 × 42,512.97
  4. Step 4: Simplify right side
    78,323.05x = 4,595,130,316.58
  5. Step 5: Solve for x
    x = 4,595,130,316.58/78,323.05
  6. Step 6: Final answer
    x = 58,668.94

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1.5x scale

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.