Home / 90,505.05-135,779.52-27,321.40

Finding the Fourth Proportional to 90,505.05, 135,779.52 and 27,321.40

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Solution

The fourth proportional to 90,505.05, 135,779.52 and 27,321.40 is: 40,988.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,505.05 : 135,779.52 = 27,321.40 : x
  2. Step 2: Convert to fraction form
    90,505.05/135,779.52 = 27,321.40/x
  3. Step 3: Cross multiply
    90,505.05x = 135,779.52 × 27,321.40
  4. Step 4: Simplify right side
    90,505.05x = 3,709,686,009.31
  5. Step 5: Solve for x
    x = 3,709,686,009.31/90,505.05
  6. Step 6: Final answer
    x = 40,988.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.