Home / 78,252.66-117,178.63-43,153.38

Finding the Fourth Proportional to 78,252.66, 117,178.63 and 43,153.38

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Solution

The fourth proportional to 78,252.66, 117,178.63 and 43,153.38 is: 64,619.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,252.66 : 117,178.63 = 43,153.38 : x
  2. Step 2: Convert to fraction form
    78,252.66/117,178.63 = 43,153.38/x
  3. Step 3: Cross multiply
    78,252.66x = 117,178.63 × 43,153.38
  4. Step 4: Simplify right side
    78,252.66x = 5,056,653,948.27
  5. Step 5: Solve for x
    x = 5,056,653,948.27/78,252.66
  6. Step 6: Final answer
    x = 64,619.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.