Home / 90,305.56-135,541.52-45,964

Finding the Fourth Proportional to 90,305.56, 135,541.52 and 45,964

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Solution

The fourth proportional to 90,305.56, 135,541.52 and 45,964 is: 68,988.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,305.56 : 135,541.52 = 45,964 : x
  2. Step 2: Convert to fraction form
    90,305.56/135,541.52 = 45,964/x
  3. Step 3: Cross multiply
    90,305.56x = 135,541.52 × 45,964
  4. Step 4: Simplify right side
    90,305.56x = 6,230,030,425.28
  5. Step 5: Solve for x
    x = 6,230,030,425.28/90,305.56
  6. Step 6: Final answer
    x = 68,988.34

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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.