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Finding the Fourth Proportional to 61,261.50, 91,892.25 and 19,708.50

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Solution

The fourth proportional to 61,261.50, 91,892.25 and 19,708.50 is: 29,562.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,261.50 : 91,892.25 = 19,708.50 : x
  2. Step 2: Convert to fraction form
    61,261.50/91,892.25 = 19,708.50/x
  3. Step 3: Cross multiply
    61,261.50x = 91,892.25 × 19,708.50
  4. Step 4: Simplify right side
    61,261.50x = 1,811,058,409.13
  5. Step 5: Solve for x
    x = 1,811,058,409.13/61,261.50
  6. Step 6: Final answer
    x = 29,562.75

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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.