Home / 90,078.37-134,920.72-45,628.81

Finding the Fourth Proportional to 90,078.37, 134,920.72 and 45,628.81

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Solution

The fourth proportional to 90,078.37, 134,920.72 and 45,628.81 is: 68,343.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,078.37 : 134,920.72 = 45,628.81 : x
  2. Step 2: Convert to fraction form
    90,078.37/134,920.72 = 45,628.81/x
  3. Step 3: Cross multiply
    90,078.37x = 134,920.72 × 45,628.81
  4. Step 4: Simplify right side
    90,078.37x = 6,156,271,617.68
  5. Step 5: Solve for x
    x = 6,156,271,617.68/90,078.37
  6. Step 6: Final answer
    x = 68,343.51

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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.