Home / 48,109.08-71,679.75-45,426.36

Finding the Fourth Proportional to 48,109.08, 71,679.75 and 45,426.36

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Solution

The fourth proportional to 48,109.08, 71,679.75 and 45,426.36 is: 67,682.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,109.08 : 71,679.75 = 45,426.36 : x
  2. Step 2: Convert to fraction form
    48,109.08/71,679.75 = 45,426.36/x
  3. Step 3: Cross multiply
    48,109.08x = 71,679.75 × 45,426.36
  4. Step 4: Simplify right side
    48,109.08x = 3,256,150,128.21
  5. Step 5: Solve for x
    x = 3,256,150,128.21/48,109.08
  6. Step 6: Final answer
    x = 67,682.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.