Home / 105,517.80-145,610.10-57,770.28

Finding the Fourth Proportional to 105,517.80, 145,610.10 and 57,770.28

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Solution

The fourth proportional to 105,517.80, 145,610.10 and 57,770.28 is: 79,720.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,517.80 : 145,610.10 = 57,770.28 : x
  2. Step 2: Convert to fraction form
    105,517.80/145,610.10 = 57,770.28/x
  3. Step 3: Cross multiply
    105,517.80x = 145,610.10 × 57,770.28
  4. Step 4: Simplify right side
    105,517.80x = 8,411,936,247.83
  5. Step 5: Solve for x
    x = 8,411,936,247.83/105,517.80
  6. Step 6: Final answer
    x = 79,720.54

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1.5x scale

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.