Home / 54,420.12-81,622.89-21,136.95

Finding the Fourth Proportional to 54,420.12, 81,622.89 and 21,136.95

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Solution

The fourth proportional to 54,420.12, 81,622.89 and 21,136.95 is: 31,702.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,420.12 : 81,622.89 = 21,136.95 : x
  2. Step 2: Convert to fraction form
    54,420.12/81,622.89 = 21,136.95/x
  3. Step 3: Cross multiply
    54,420.12x = 81,622.89 × 21,136.95
  4. Step 4: Simplify right side
    54,420.12x = 1,725,258,944.79
  5. Step 5: Solve for x
    x = 1,725,258,944.79/54,420.12
  6. Step 6: Final answer
    x = 31,702.59

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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.