Home / 105,490.88-145,577.46-57,744.50

Finding the Fourth Proportional to 105,490.88, 145,577.46 and 57,744.50

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Solution

The fourth proportional to 105,490.88, 145,577.46 and 57,744.50 is: 79,687.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,490.88 : 145,577.46 = 57,744.50 : x
  2. Step 2: Convert to fraction form
    105,490.88/145,577.46 = 57,744.50/x
  3. Step 3: Cross multiply
    105,490.88x = 145,577.46 × 57,744.50
  4. Step 4: Simplify right side
    105,490.88x = 8,406,297,638.97
  5. Step 5: Solve for x
    x = 8,406,297,638.97/105,490.88
  6. Step 6: Final answer
    x = 79,687.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.