Home / 85,613.11-128,387.73-29,437.31

Finding the Fourth Proportional to 85,613.11, 128,387.73 and 29,437.31

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Solution

The fourth proportional to 85,613.11, 128,387.73 and 29,437.31 is: 44,144.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,613.11 : 128,387.73 = 29,437.31 : x
  2. Step 2: Convert to fraction form
    85,613.11/128,387.73 = 29,437.31/x
  3. Step 3: Cross multiply
    85,613.11x = 128,387.73 × 29,437.31
  4. Step 4: Simplify right side
    85,613.11x = 3,779,389,408.21
  5. Step 5: Solve for x
    x = 3,779,389,408.21/85,613.11
  6. Step 6: Final answer
    x = 44,144.98

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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.