Home / 85,549.30-128,324.02-23,219.80

Finding the Fourth Proportional to 85,549.30, 128,324.02 and 23,219.80

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Solution

The fourth proportional to 85,549.30, 128,324.02 and 23,219.80 is: 34,829.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,549.30 : 128,324.02 = 23,219.80 : x
  2. Step 2: Convert to fraction form
    85,549.30/128,324.02 = 23,219.80/x
  3. Step 3: Cross multiply
    85,549.30x = 128,324.02 × 23,219.80
  4. Step 4: Simplify right side
    85,549.30x = 2,979,658,079.60
  5. Step 5: Solve for x
    x = 2,979,658,079.60/85,549.30
  6. Step 6: Final answer
    x = 34,829.72

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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.