Home / 54,444.90-81,628.74-21,136.89

Finding the Fourth Proportional to 54,444.90, 81,628.74 and 21,136.89

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Solution

The fourth proportional to 54,444.90, 81,628.74 and 21,136.89 is: 31,690.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,444.90 : 81,628.74 = 21,136.89 : x
  2. Step 2: Convert to fraction form
    54,444.90/81,628.74 = 21,136.89/x
  3. Step 3: Cross multiply
    54,444.90x = 81,628.74 × 21,136.89
  4. Step 4: Simplify right side
    54,444.90x = 1,725,377,698.22
  5. Step 5: Solve for x
    x = 1,725,377,698.22/54,444.90
  6. Step 6: Final answer
    x = 31,690.35

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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.