Home / 80,421.02-120,613.17-30,506.66

Finding the Fourth Proportional to 80,421.02, 120,613.17 and 30,506.66

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Solution

The fourth proportional to 80,421.02, 120,613.17 and 30,506.66 is: 45,753.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,421.02 : 120,613.17 = 30,506.66 : x
  2. Step 2: Convert to fraction form
    80,421.02/120,613.17 = 30,506.66/x
  3. Step 3: Cross multiply
    80,421.02x = 120,613.17 × 30,506.66
  4. Step 4: Simplify right side
    80,421.02x = 3,679,504,968.71
  5. Step 5: Solve for x
    x = 3,679,504,968.71/80,421.02
  6. Step 6: Final answer
    x = 45,753.03

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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.