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Finding the Fourth Proportional to 66,172,867.60, 99,259,301.40 and 50,867,366.80

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Solution

The fourth proportional to 66,172,867.60, 99,259,301.40 and 50,867,366.80 is: 76,301,050.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,172,867.60 : 99,259,301.40 = 50,867,366.80 : x
  2. Step 2: Convert to fraction form
    66,172,867.60/99,259,301.40 = 50,867,366.80/x
  3. Step 3: Cross multiply
    66,172,867.60x = 99,259,301.40 × 50,867,366.80
  4. Step 4: Simplify right side
    66,172,867.60x = 5,049,059,292,625,554
  5. Step 5: Solve for x
    x = 5,049,059,292,625,554/66,172,867.60
  6. Step 6: Final answer
    x = 76,301,050.20

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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.