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Finding the Fourth Proportional to 81,248.90, 121,884.90 and 25,093.58

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Solution

The fourth proportional to 81,248.90, 121,884.90 and 25,093.58 is: 37,643.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,248.90 : 121,884.90 = 25,093.58 : x
  2. Step 2: Convert to fraction form
    81,248.90/121,884.90 = 25,093.58/x
  3. Step 3: Cross multiply
    81,248.90x = 121,884.90 × 25,093.58
  4. Step 4: Simplify right side
    81,248.90x = 3,058,528,488.94
  5. Step 5: Solve for x
    x = 3,058,528,488.94/81,248.90
  6. Step 6: Final answer
    x = 37,643.94

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1.5x scale

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.