Home / 72,135.44-99,545.05-40,304.60

Finding the Fourth Proportional to 72,135.44, 99,545.05 and 40,304.60

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Solution

The fourth proportional to 72,135.44, 99,545.05 and 40,304.60 is: 55,619.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,135.44 : 99,545.05 = 40,304.60 : x
  2. Step 2: Convert to fraction form
    72,135.44/99,545.05 = 40,304.60/x
  3. Step 3: Cross multiply
    72,135.44x = 99,545.05 × 40,304.60
  4. Step 4: Simplify right side
    72,135.44x = 4,012,123,422.23
  5. Step 5: Solve for x
    x = 4,012,123,422.23/72,135.44
  6. Step 6: Final answer
    x = 55,619.31

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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.