Home / 90,507.49-135,779.46-31,341.85

Finding the Fourth Proportional to 90,507.49, 135,779.46 and 31,341.85

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Solution

The fourth proportional to 90,507.49, 135,779.46 and 31,341.85 is: 47,019.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,507.49 : 135,779.46 = 31,341.85 : x
  2. Step 2: Convert to fraction form
    90,507.49/135,779.46 = 31,341.85/x
  3. Step 3: Cross multiply
    90,507.49x = 135,779.46 × 31,341.85
  4. Step 4: Simplify right side
    90,507.49x = 4,255,579,468.40
  5. Step 5: Solve for x
    x = 4,255,579,468.40/90,507.49
  6. Step 6: Final answer
    x = 47,019.09

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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.