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Finding the Fourth Proportional to 40,666.90, 56,120.31 and 22,761.90

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Solution

The fourth proportional to 40,666.90, 56,120.31 and 22,761.90 is: 31,411.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,666.90 : 56,120.31 = 22,761.90 : x
  2. Step 2: Convert to fraction form
    40,666.90/56,120.31 = 22,761.90/x
  3. Step 3: Cross multiply
    40,666.90x = 56,120.31 × 22,761.90
  4. Step 4: Simplify right side
    40,666.90x = 1,277,404,673.74
  5. Step 5: Solve for x
    x = 1,277,404,673.74/40,666.90
  6. Step 6: Final answer
    x = 31,411.41

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1.5x scale

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.