Home / 85,732.49-128,607.19-29,565.25

Finding the Fourth Proportional to 85,732.49, 128,607.19 and 29,565.25

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Solution

The fourth proportional to 85,732.49, 128,607.19 and 29,565.25 is: 44,350.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,732.49 : 128,607.19 = 29,565.25 : x
  2. Step 2: Convert to fraction form
    85,732.49/128,607.19 = 29,565.25/x
  3. Step 3: Cross multiply
    85,732.49x = 128,607.19 × 29,565.25
  4. Step 4: Simplify right side
    85,732.49x = 3,802,303,328.72
  5. Step 5: Solve for x
    x = 3,802,303,328.72/85,732.49
  6. Step 6: Final answer
    x = 44,350.78

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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.