Home / 54,606.40-81,909.60-21,327.55

Finding the Fourth Proportional to 54,606.40, 81,909.60 and 21,327.55

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Solution

The fourth proportional to 54,606.40, 81,909.60 and 21,327.55 is: 31,991.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,606.40 : 81,909.60 = 21,327.55 : x
  2. Step 2: Convert to fraction form
    54,606.40/81,909.60 = 21,327.55/x
  3. Step 3: Cross multiply
    54,606.40x = 81,909.60 × 21,327.55
  4. Step 4: Simplify right side
    54,606.40x = 1,746,931,089.48
  5. Step 5: Solve for x
    x = 1,746,931,089.48/54,606.40
  6. Step 6: Final answer
    x = 31,991.33

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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.