Home / 55,784.09-83,638.98-20,240.80

Finding the Fourth Proportional to 55,784.09, 83,638.98 and 20,240.80

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Solution

The fourth proportional to 55,784.09, 83,638.98 and 20,240.80 is: 30,347.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,784.09 : 83,638.98 = 20,240.80 : x
  2. Step 2: Convert to fraction form
    55,784.09/83,638.98 = 20,240.80/x
  3. Step 3: Cross multiply
    55,784.09x = 83,638.98 × 20,240.80
  4. Step 4: Simplify right side
    55,784.09x = 1,692,920,127.76
  5. Step 5: Solve for x
    x = 1,692,920,127.76/55,784.09
  6. Step 6: Final answer
    x = 30,347.72

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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.