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Finding the Fourth Proportional to 91,036, 136,554.08 and 25,372

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Solution

The fourth proportional to 91,036, 136,554.08 and 25,372 is: 38,058.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,036 : 136,554.08 = 25,372 : x
  2. Step 2: Convert to fraction form
    91,036/136,554.08 = 25,372/x
  3. Step 3: Cross multiply
    91,036x = 136,554.08 × 25,372
  4. Step 4: Simplify right side
    91,036x = 3,464,650,117.76
  5. Step 5: Solve for x
    x = 3,464,650,117.76/91,036
  6. Step 6: Final answer
    x = 38,058.02

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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.