Home / 81,450.90-122,101.14-56,502.72

Finding the Fourth Proportional to 81,450.90, 122,101.14 and 56,502.72

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Solution

The fourth proportional to 81,450.90, 122,101.14 and 56,502.72 is: 84,701.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,450.90 : 122,101.14 = 56,502.72 : x
  2. Step 2: Convert to fraction form
    81,450.90/122,101.14 = 56,502.72/x
  3. Step 3: Cross multiply
    81,450.90x = 122,101.14 × 56,502.72
  4. Step 4: Simplify right side
    81,450.90x = 6,899,046,525.10
  5. Step 5: Solve for x
    x = 6,899,046,525.10/81,450.90
  6. Step 6: Final answer
    x = 84,701.91

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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.