Home / 78,322.36-108,086.98-42,512.44

Finding the Fourth Proportional to 78,322.36, 108,086.98 and 42,512.44

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Solution

The fourth proportional to 78,322.36, 108,086.98 and 42,512.44 is: 58,668.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,322.36 : 108,086.98 = 42,512.44 : x
  2. Step 2: Convert to fraction form
    78,322.36/108,086.98 = 42,512.44/x
  3. Step 3: Cross multiply
    78,322.36x = 108,086.98 × 42,512.44
  4. Step 4: Simplify right side
    78,322.36x = 4,595,041,252.03
  5. Step 5: Solve for x
    x = 4,595,041,252.03/78,322.36
  6. Step 6: Final answer
    x = 58,668.32

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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.