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Finding the Fourth Proportional to 72,881,689.60, 109,364,524.80 and 27,476,070.40

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Solution

The fourth proportional to 72,881,689.60, 109,364,524.80 and 27,476,070.40 is: 41,229,935.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,881,689.60 : 109,364,524.80 = 27,476,070.40 : x
  2. Step 2: Convert to fraction form
    72,881,689.60/109,364,524.80 = 27,476,070.40/x
  3. Step 3: Cross multiply
    72,881,689.60x = 109,364,524.80 × 27,476,070.40
  4. Step 4: Simplify right side
    72,881,689.60x = 3,004,907,382,667,345.50
  5. Step 5: Solve for x
    x = 3,004,907,382,667,345.50/72,881,689.60
  6. Step 6: Final answer
    x = 41,229,935.79

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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.