Home / 105,477.48-145,553.33-57,721.60

Finding the Fourth Proportional to 105,477.48, 145,553.33 and 57,721.60

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Solution

The fourth proportional to 105,477.48, 145,553.33 and 57,721.60 is: 79,652.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,477.48 : 145,553.33 = 57,721.60 : x
  2. Step 2: Convert to fraction form
    105,477.48/145,553.33 = 57,721.60/x
  3. Step 3: Cross multiply
    105,477.48x = 145,553.33 × 57,721.60
  4. Step 4: Simplify right side
    105,477.48x = 8,401,571,092.93
  5. Step 5: Solve for x
    x = 8,401,571,092.93/105,477.48
  6. Step 6: Final answer
    x = 79,652.75

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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.