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Finding the Fourth Proportional to 115,588, 173,432.08 and 40,761.60

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Solution

The fourth proportional to 115,588, 173,432.08 and 40,761.60 is: 61,160.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,588 : 173,432.08 = 40,761.60 : x
  2. Step 2: Convert to fraction form
    115,588/173,432.08 = 40,761.60/x
  3. Step 3: Cross multiply
    115,588x = 173,432.08 × 40,761.60
  4. Step 4: Simplify right side
    115,588x = 7,069,369,072.13
  5. Step 5: Solve for x
    x = 7,069,369,072.13/115,588
  6. Step 6: Final answer
    x = 61,160.06

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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.