Home / 78,683.47-108,583.20-42,873.49

Finding the Fourth Proportional to 78,683.47, 108,583.20 and 42,873.49

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Solution

The fourth proportional to 78,683.47, 108,583.20 and 42,873.49 is: 59,165.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,683.47 : 108,583.20 = 42,873.49 : x
  2. Step 2: Convert to fraction form
    78,683.47/108,583.20 = 42,873.49/x
  3. Step 3: Cross multiply
    78,683.47x = 108,583.20 × 42,873.49
  4. Step 4: Simplify right side
    78,683.47x = 4,655,340,467.91
  5. Step 5: Solve for x
    x = 4,655,340,467.91/78,683.47
  6. Step 6: Final answer
    x = 59,165.42

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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.