Home / 90,255.77-135,399.02-45,298.56

Finding the Fourth Proportional to 90,255.77, 135,399.02 and 45,298.56

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Solution

The fourth proportional to 90,255.77, 135,399.02 and 45,298.56 is: 67,955.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,255.77 : 135,399.02 = 45,298.56 : x
  2. Step 2: Convert to fraction form
    90,255.77/135,399.02 = 45,298.56/x
  3. Step 3: Cross multiply
    90,255.77x = 135,399.02 × 45,298.56
  4. Step 4: Simplify right side
    90,255.77x = 6,133,380,631.41
  5. Step 5: Solve for x
    x = 6,133,380,631.41/90,255.77
  6. Step 6: Final answer
    x = 67,955.55

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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.