Home / 90,345.18-135,567.99-40,423.26

Finding the Fourth Proportional to 90,345.18, 135,567.99 and 40,423.26

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Solution

The fourth proportional to 90,345.18, 135,567.99 and 40,423.26 is: 60,657.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,345.18 : 135,567.99 = 40,423.26 : x
  2. Step 2: Convert to fraction form
    90,345.18/135,567.99 = 40,423.26/x
  3. Step 3: Cross multiply
    90,345.18x = 135,567.99 × 40,423.26
  4. Step 4: Simplify right side
    90,345.18x = 5,480,100,107.45
  5. Step 5: Solve for x
    x = 5,480,100,107.45/90,345.18
  6. Step 6: Final answer
    x = 60,657.36

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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.