Home / 99,841.34-149,720.40-40,636.82

Finding the Fourth Proportional to 99,841.34, 149,720.40 and 40,636.82

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Solution

The fourth proportional to 99,841.34, 149,720.40 and 40,636.82 is: 60,938.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,841.34 : 149,720.40 = 40,636.82 : x
  2. Step 2: Convert to fraction form
    99,841.34/149,720.40 = 40,636.82/x
  3. Step 3: Cross multiply
    99,841.34x = 149,720.40 × 40,636.82
  4. Step 4: Simplify right side
    99,841.34x = 6,084,160,945.13
  5. Step 5: Solve for x
    x = 6,084,160,945.13/99,841.34
  6. Step 6: Final answer
    x = 60,938.29

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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.