Home / 40,523.12-55,945.32-30,887.36

Finding the Fourth Proportional to 40,523.12, 55,945.32 and 30,887.36

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Solution

The fourth proportional to 40,523.12, 55,945.32 and 30,887.36 is: 42,642.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,523.12 : 55,945.32 = 30,887.36 : x
  2. Step 2: Convert to fraction form
    40,523.12/55,945.32 = 30,887.36/x
  3. Step 3: Cross multiply
    40,523.12x = 55,945.32 × 30,887.36
  4. Step 4: Simplify right side
    40,523.12x = 1,728,003,239.16
  5. Step 5: Solve for x
    x = 1,728,003,239.16/40,523.12
  6. Step 6: Final answer
    x = 42,642.40

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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.