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Finding the Fourth Proportional to 72,881,685.60, 109,364,518.80 and 27,476,066.40

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Solution

The fourth proportional to 72,881,685.60, 109,364,518.80 and 27,476,066.40 is: 41,229,929.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,881,685.60 : 109,364,518.80 = 27,476,066.40 : x
  2. Step 2: Convert to fraction form
    72,881,685.60/109,364,518.80 = 27,476,066.40/x
  3. Step 3: Cross multiply
    72,881,685.60x = 109,364,518.80 × 27,476,066.40
  4. Step 4: Simplify right side
    72,881,685.60x = 3,004,906,780,352,848
  5. Step 5: Solve for x
    x = 3,004,906,780,352,848/72,881,685.60
  6. Step 6: Final answer
    x = 41,229,929.79

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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.