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Finding the Fourth Proportional to 57,636, 79,603.29 and 38,740.32

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Solution

The fourth proportional to 57,636, 79,603.29 and 38,740.32 is: 53,505.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,636 : 79,603.29 = 38,740.32 : x
  2. Step 2: Convert to fraction form
    57,636/79,603.29 = 38,740.32/x
  3. Step 3: Cross multiply
    57,636x = 79,603.29 × 38,740.32
  4. Step 4: Simplify right side
    57,636x = 3,083,856,927.65
  5. Step 5: Solve for x
    x = 3,083,856,927.65/57,636
  6. Step 6: Final answer
    x = 53,505.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.