Home / 87,430.70-131,178.45-28,268.30

Finding the Fourth Proportional to 87,430.70, 131,178.45 and 28,268.30

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Solution

The fourth proportional to 87,430.70, 131,178.45 and 28,268.30 is: 42,412.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,430.70 : 131,178.45 = 28,268.30 : x
  2. Step 2: Convert to fraction form
    87,430.70/131,178.45 = 28,268.30/x
  3. Step 3: Cross multiply
    87,430.70x = 131,178.45 × 28,268.30
  4. Step 4: Simplify right side
    87,430.70x = 3,708,191,778.14
  5. Step 5: Solve for x
    x = 3,708,191,778.14/87,430.70
  6. Step 6: Final answer
    x = 42,412.93

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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.