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Finding the Fourth Proportional to 72,414.55, 99,926.62 and 40,577.32

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Solution

The fourth proportional to 72,414.55, 99,926.62 and 40,577.32 is: 55,993.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,414.55 : 99,926.62 = 40,577.32 : x
  2. Step 2: Convert to fraction form
    72,414.55/99,926.62 = 40,577.32/x
  3. Step 3: Cross multiply
    72,414.55x = 99,926.62 × 40,577.32
  4. Step 4: Simplify right side
    72,414.55x = 4,054,754,436.26
  5. Step 5: Solve for x
    x = 4,054,754,436.26/72,414.55
  6. Step 6: Final answer
    x = 55,993.64

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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.