Home / 78,466.32-117,747.95-31,073.43

Finding the Fourth Proportional to 78,466.32, 117,747.95 and 31,073.43

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Solution

The fourth proportional to 78,466.32, 117,747.95 and 31,073.43 is: 46,629.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,466.32 : 117,747.95 = 31,073.43 : x
  2. Step 2: Convert to fraction form
    78,466.32/117,747.95 = 31,073.43/x
  3. Step 3: Cross multiply
    78,466.32x = 117,747.95 × 31,073.43
  4. Step 4: Simplify right side
    78,466.32x = 3,658,832,526.60
  5. Step 5: Solve for x
    x = 3,658,832,526.60/78,466.32
  6. Step 6: Final answer
    x = 46,629.34

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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.