Home / 55,345.20-82,920.60-45,430.80

Finding the Fourth Proportional to 55,345.20, 82,920.60 and 45,430.80

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Solution

The fourth proportional to 55,345.20, 82,920.60 and 45,430.80 is: 68,066.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,345.20 : 82,920.60 = 45,430.80 : x
  2. Step 2: Convert to fraction form
    55,345.20/82,920.60 = 45,430.80/x
  3. Step 3: Cross multiply
    55,345.20x = 82,920.60 × 45,430.80
  4. Step 4: Simplify right side
    55,345.20x = 3,767,149,194.48
  5. Step 5: Solve for x
    x = 3,767,149,194.48/55,345.20
  6. Step 6: Final answer
    x = 68,066.41

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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.