Home / 77,201.10-115,655.85-39,633.30

Finding the Fourth Proportional to 77,201.10, 115,655.85 and 39,633.30

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Solution

The fourth proportional to 77,201.10, 115,655.85 and 39,633.30 is: 59,375.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,201.10 : 115,655.85 = 39,633.30 : x
  2. Step 2: Convert to fraction form
    77,201.10/115,655.85 = 39,633.30/x
  3. Step 3: Cross multiply
    77,201.10x = 115,655.85 × 39,633.30
  4. Step 4: Simplify right side
    77,201.10x = 4,583,822,999.81
  5. Step 5: Solve for x
    x = 4,583,822,999.81/77,201.10
  6. Step 6: Final answer
    x = 59,375.10

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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.