Home / 66,459.21-91,713.87-37,779.06

Finding the Fourth Proportional to 66,459.21, 91,713.87 and 37,779.06

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Solution

The fourth proportional to 66,459.21, 91,713.87 and 37,779.06 is: 52,135.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,459.21 : 91,713.87 = 37,779.06 : x
  2. Step 2: Convert to fraction form
    66,459.21/91,713.87 = 37,779.06/x
  3. Step 3: Cross multiply
    66,459.21x = 91,713.87 × 37,779.06
  4. Step 4: Simplify right side
    66,459.21x = 3,464,863,797.56
  5. Step 5: Solve for x
    x = 3,464,863,797.56/66,459.21
  6. Step 6: Final answer
    x = 52,135.19

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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.