Home / 80,820-111,531.60-47,292.48

Finding the Fourth Proportional to 80,820, 111,531.60 and 47,292.48

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Solution

The fourth proportional to 80,820, 111,531.60 and 47,292.48 is: 65,263.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,820 : 111,531.60 = 47,292.48 : x
  2. Step 2: Convert to fraction form
    80,820/111,531.60 = 47,292.48/x
  3. Step 3: Cross multiply
    80,820x = 111,531.60 × 47,292.48
  4. Step 4: Simplify right side
    80,820x = 5,274,605,962.37
  5. Step 5: Solve for x
    x = 5,274,605,962.37/80,820
  6. Step 6: Final answer
    x = 65,263.62

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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.