Home / 81,682.02-122,477.13-28,349.19

Finding the Fourth Proportional to 81,682.02, 122,477.13 and 28,349.19

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Solution

The fourth proportional to 81,682.02, 122,477.13 and 28,349.19 is: 42,507.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,682.02 : 122,477.13 = 28,349.19 : x
  2. Step 2: Convert to fraction form
    81,682.02/122,477.13 = 28,349.19/x
  3. Step 3: Cross multiply
    81,682.02x = 122,477.13 × 28,349.19
  4. Step 4: Simplify right side
    81,682.02x = 3,472,127,429.02
  5. Step 5: Solve for x
    x = 3,472,127,429.02/81,682.02
  6. Step 6: Final answer
    x = 42,507.85

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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.