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Finding the Fourth Proportional to 55,641.33, 83,494.80 and 20,605.59

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Solution

The fourth proportional to 55,641.33, 83,494.80 and 20,605.59 is: 30,920.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,641.33 : 83,494.80 = 20,605.59 : x
  2. Step 2: Convert to fraction form
    55,641.33/83,494.80 = 20,605.59/x
  3. Step 3: Cross multiply
    55,641.33x = 83,494.80 × 20,605.59
  4. Step 4: Simplify right side
    55,641.33x = 1,720,459,615.93
  5. Step 5: Solve for x
    x = 1,720,459,615.93/55,641.33
  6. Step 6: Final answer
    x = 30,920.53

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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.