Home / 105,523.48-145,625.70-57,781.36

Finding the Fourth Proportional to 105,523.48, 145,625.70 and 57,781.36

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Solution

The fourth proportional to 105,523.48, 145,625.70 and 57,781.36 is: 79,740.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,523.48 : 145,625.70 = 57,781.36 : x
  2. Step 2: Convert to fraction form
    105,523.48/145,625.70 = 57,781.36/x
  3. Step 3: Cross multiply
    105,523.48x = 145,625.70 × 57,781.36
  4. Step 4: Simplify right side
    105,523.48x = 8,414,450,996.95
  5. Step 5: Solve for x
    x = 8,414,450,996.95/105,523.48
  6. Step 6: Final answer
    x = 79,740.08

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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.