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Finding the Fourth Proportional to 72,218.80, 108,182.40 and 41,017.60

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Solution

The fourth proportional to 72,218.80, 108,182.40 and 41,017.60 is: 61,443.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,218.80 : 108,182.40 = 41,017.60 : x
  2. Step 2: Convert to fraction form
    72,218.80/108,182.40 = 41,017.60/x
  3. Step 3: Cross multiply
    72,218.80x = 108,182.40 × 41,017.60
  4. Step 4: Simplify right side
    72,218.80x = 4,437,382,410.24
  5. Step 5: Solve for x
    x = 4,437,382,410.24/72,218.80
  6. Step 6: Final answer
    x = 61,443.59

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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.