Home / 74,254.08-102,470.48-40,720

Finding the Fourth Proportional to 74,254.08, 102,470.48 and 40,720

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Solution

The fourth proportional to 74,254.08, 102,470.48 and 40,720 is: 56,193.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,254.08 : 102,470.48 = 40,720 : x
  2. Step 2: Convert to fraction form
    74,254.08/102,470.48 = 40,720/x
  3. Step 3: Cross multiply
    74,254.08x = 102,470.48 × 40,720
  4. Step 4: Simplify right side
    74,254.08x = 4,172,597,945.60
  5. Step 5: Solve for x
    x = 4,172,597,945.60/74,254.08
  6. Step 6: Final answer
    x = 56,193.52

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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.