Home / 78,468.93-108,289.26-42,661.41

Finding the Fourth Proportional to 78,468.93, 108,289.26 and 42,661.41

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Solution

The fourth proportional to 78,468.93, 108,289.26 and 42,661.41 is: 58,873.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,468.93 : 108,289.26 = 42,661.41 : x
  2. Step 2: Convert to fraction form
    78,468.93/108,289.26 = 42,661.41/x
  3. Step 3: Cross multiply
    78,468.93x = 108,289.26 × 42,661.41
  4. Step 4: Simplify right side
    78,468.93x = 4,619,772,519.46
  5. Step 5: Solve for x
    x = 4,619,772,519.46/78,468.93
  6. Step 6: Final answer
    x = 58,873.91

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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.