Home / 81,424.10-122,132.10-41,985.20

Finding the Fourth Proportional to 81,424.10, 122,132.10 and 41,985.20

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Solution

The fourth proportional to 81,424.10, 122,132.10 and 41,985.20 is: 62,975.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,424.10 : 122,132.10 = 41,985.20 : x
  2. Step 2: Convert to fraction form
    81,424.10/122,132.10 = 41,985.20/x
  3. Step 3: Cross multiply
    81,424.10x = 122,132.10 × 41,985.20
  4. Step 4: Simplify right side
    81,424.10x = 5,127,740,644.92
  5. Step 5: Solve for x
    x = 5,127,740,644.92/81,424.10
  6. Step 6: Final answer
    x = 62,975.71

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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.