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Finding the Fourth Proportional to 40,563.15, 55,978.28 and 22,415.05

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Solution

The fourth proportional to 40,563.15, 55,978.28 and 22,415.05 is: 30,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,563.15 : 55,978.28 = 22,415.05 : x
  2. Step 2: Convert to fraction form
    40,563.15/55,978.28 = 22,415.05/x
  3. Step 3: Cross multiply
    40,563.15x = 55,978.28 × 22,415.05
  4. Step 4: Simplify right side
    40,563.15x = 1,254,755,945.11
  5. Step 5: Solve for x
    x = 1,254,755,945.11/40,563.15
  6. Step 6: Final answer
    x = 30,933.40

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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.