Home / 78,451.66-108,258.71-42,641.36

Finding the Fourth Proportional to 78,451.66, 108,258.71 and 42,641.36

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Solution

The fourth proportional to 78,451.66, 108,258.71 and 42,641.36 is: 58,842.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,451.66 : 108,258.71 = 42,641.36 : x
  2. Step 2: Convert to fraction form
    78,451.66/108,258.71 = 42,641.36/x
  3. Step 3: Cross multiply
    78,451.66x = 108,258.71 × 42,641.36
  4. Step 4: Simplify right side
    78,451.66x = 4,616,297,871.75
  5. Step 5: Solve for x
    x = 4,616,297,871.75/78,451.66
  6. Step 6: Final answer
    x = 58,842.58

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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.