Home / 90,330.16-135,579.28-45,990.08

Finding the Fourth Proportional to 90,330.16, 135,579.28 and 45,990.08

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Solution

The fourth proportional to 90,330.16, 135,579.28 and 45,990.08 is: 69,027.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,330.16 : 135,579.28 = 45,990.08 : x
  2. Step 2: Convert to fraction form
    90,330.16/135,579.28 = 45,990.08/x
  3. Step 3: Cross multiply
    90,330.16x = 135,579.28 × 45,990.08
  4. Step 4: Simplify right side
    90,330.16x = 6,235,301,933.54
  5. Step 5: Solve for x
    x = 6,235,301,933.54/90,330.16
  6. Step 6: Final answer
    x = 69,027.91

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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.