Home / 78,464.34-117,696.54-31,750.02

Finding the Fourth Proportional to 78,464.34, 117,696.54 and 31,750.02

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Solution

The fourth proportional to 78,464.34, 117,696.54 and 31,750.02 is: 47,625.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,464.34 : 117,696.54 = 31,750.02 : x
  2. Step 2: Convert to fraction form
    78,464.34/117,696.54 = 31,750.02/x
  3. Step 3: Cross multiply
    78,464.34x = 117,696.54 × 31,750.02
  4. Step 4: Simplify right side
    78,464.34x = 3,736,867,498.93
  5. Step 5: Solve for x
    x = 3,736,867,498.93/78,464.34
  6. Step 6: Final answer
    x = 47,625.04

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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.