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Finding the Fourth Proportional to 85,137.40, 127,726.08 and 25,973.06

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Solution

The fourth proportional to 85,137.40, 127,726.08 and 25,973.06 is: 38,965.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,137.40 : 127,726.08 = 25,973.06 : x
  2. Step 2: Convert to fraction form
    85,137.40/127,726.08 = 25,973.06/x
  3. Step 3: Cross multiply
    85,137.40x = 127,726.08 × 25,973.06
  4. Step 4: Simplify right side
    85,137.40x = 3,317,436,439.90
  5. Step 5: Solve for x
    x = 3,317,436,439.90/85,137.40
  6. Step 6: Final answer
    x = 38,965.68

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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.