Home / 90,407.34-135,609.39-28,077.84

Finding the Fourth Proportional to 90,407.34, 135,609.39 and 28,077.84

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Solution

The fourth proportional to 90,407.34, 135,609.39 and 28,077.84 is: 42,116.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,407.34 : 135,609.39 = 28,077.84 : x
  2. Step 2: Convert to fraction form
    90,407.34/135,609.39 = 28,077.84/x
  3. Step 3: Cross multiply
    90,407.34x = 135,609.39 × 28,077.84
  4. Step 4: Simplify right side
    90,407.34x = 3,807,618,754.92
  5. Step 5: Solve for x
    x = 3,807,618,754.92/90,407.34
  6. Step 6: Final answer
    x = 42,116.26

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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.