Home / 54,505.12-75,190.80-47,420.32

Finding the Fourth Proportional to 54,505.12, 75,190.80 and 47,420.32

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Solution

The fourth proportional to 54,505.12, 75,190.80 and 47,420.32 is: 65,417.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,505.12 : 75,190.80 = 47,420.32 : x
  2. Step 2: Convert to fraction form
    54,505.12/75,190.80 = 47,420.32/x
  3. Step 3: Cross multiply
    54,505.12x = 75,190.80 × 47,420.32
  4. Step 4: Simplify right side
    54,505.12x = 3,565,571,797.06
  5. Step 5: Solve for x
    x = 3,565,571,797.06/54,505.12
  6. Step 6: Final answer
    x = 65,417.19

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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.