Home / 85,534.25-128,269.47-29,358.42

Finding the Fourth Proportional to 85,534.25, 128,269.47 and 29,358.42

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Solution

The fourth proportional to 85,534.25, 128,269.47 and 29,358.42 is: 44,026.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,534.25 : 128,269.47 = 29,358.42 : x
  2. Step 2: Convert to fraction form
    85,534.25/128,269.47 = 29,358.42/x
  3. Step 3: Cross multiply
    85,534.25x = 128,269.47 × 29,358.42
  4. Step 4: Simplify right side
    85,534.25x = 3,765,788,973.44
  5. Step 5: Solve for x
    x = 3,765,788,973.44/85,534.25
  6. Step 6: Final answer
    x = 44,026.68

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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.