Home / 90,619.04-125,139.12-58,410.20

Finding the Fourth Proportional to 90,619.04, 125,139.12 and 58,410.20

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Solution

The fourth proportional to 90,619.04, 125,139.12 and 58,410.20 is: 80,660.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,619.04 : 125,139.12 = 58,410.20 : x
  2. Step 2: Convert to fraction form
    90,619.04/125,139.12 = 58,410.20/x
  3. Step 3: Cross multiply
    90,619.04x = 125,139.12 × 58,410.20
  4. Step 4: Simplify right side
    90,619.04x = 7,309,401,027.02
  5. Step 5: Solve for x
    x = 7,309,401,027.02/90,619.04
  6. Step 6: Final answer
    x = 80,660.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.