Home / 78,695.02-117,995.64-31,284.64

Finding the Fourth Proportional to 78,695.02, 117,995.64 and 31,284.64

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Solution

The fourth proportional to 78,695.02, 117,995.64 and 31,284.64 is: 46,908.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,695.02 : 117,995.64 = 31,284.64 : x
  2. Step 2: Convert to fraction form
    78,695.02/117,995.64 = 31,284.64/x
  3. Step 3: Cross multiply
    78,695.02x = 117,995.64 × 31,284.64
  4. Step 4: Simplify right side
    78,695.02x = 3,691,451,118.97
  5. Step 5: Solve for x
    x = 3,691,451,118.97/78,695.02
  6. Step 6: Final answer
    x = 46,908.32

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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.