Home / 78,935.31-118,418.54-25,617.35

Finding the Fourth Proportional to 78,935.31, 118,418.54 and 25,617.35

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Solution

The fourth proportional to 78,935.31, 118,418.54 and 25,617.35 is: 38,431.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,935.31 : 118,418.54 = 25,617.35 : x
  2. Step 2: Convert to fraction form
    78,935.31/118,418.54 = 25,617.35/x
  3. Step 3: Cross multiply
    78,935.31x = 118,418.54 × 25,617.35
  4. Step 4: Simplify right side
    78,935.31x = 3,033,569,353.63
  5. Step 5: Solve for x
    x = 3,033,569,353.63/78,935.31
  6. Step 6: Final answer
    x = 38,431.08

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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.