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Finding the Fourth Proportional to 91,835.25, 137,752.88 and 36,431.25

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Solution

The fourth proportional to 91,835.25, 137,752.88 and 36,431.25 is: 54,646.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,835.25 : 137,752.88 = 36,431.25 : x
  2. Step 2: Convert to fraction form
    91,835.25/137,752.88 = 36,431.25/x
  3. Step 3: Cross multiply
    91,835.25x = 137,752.88 × 36,431.25
  4. Step 4: Simplify right side
    91,835.25x = 5,018,509,427.34
  5. Step 5: Solve for x
    x = 5,018,509,427.34/91,835.25
  6. Step 6: Final answer
    x = 54,646.88

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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.