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Finding the Fourth Proportional to 54,393.56, 75,062.90 and 30,520.32

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Solution

The fourth proportional to 54,393.56, 75,062.90 and 30,520.32 is: 42,117.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,393.56 : 75,062.90 = 30,520.32 : x
  2. Step 2: Convert to fraction form
    54,393.56/75,062.90 = 30,520.32/x
  3. Step 3: Cross multiply
    54,393.56x = 75,062.90 × 30,520.32
  4. Step 4: Simplify right side
    54,393.56x = 2,290,943,728.13
  5. Step 5: Solve for x
    x = 2,290,943,728.13/54,393.56
  6. Step 6: Final answer
    x = 42,117.92

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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.