Home / 71,025.20-98,011.44-40,789.20

Finding the Fourth Proportional to 71,025.20, 98,011.44 and 40,789.20

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Solution

The fourth proportional to 71,025.20, 98,011.44 and 40,789.20 is: 56,287.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,025.20 : 98,011.44 = 40,789.20 : x
  2. Step 2: Convert to fraction form
    71,025.20/98,011.44 = 40,789.20/x
  3. Step 3: Cross multiply
    71,025.20x = 98,011.44 × 40,789.20
  4. Step 4: Simplify right side
    71,025.20x = 3,997,808,228.45
  5. Step 5: Solve for x
    x = 3,997,808,228.45/71,025.20
  6. Step 6: Final answer
    x = 56,287.18

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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.