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Finding the Fourth Proportional to 86,914,881.20, 130,388,068.20 and 43,675,266.80

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Solution

The fourth proportional to 86,914,881.20, 130,388,068.20 and 43,675,266.80 is: 65,520,812.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,914,881.20 : 130,388,068.20 = 43,675,266.80 : x
  2. Step 2: Convert to fraction form
    86,914,881.20/130,388,068.20 = 43,675,266.80/x
  3. Step 3: Cross multiply
    86,914,881.20x = 130,388,068.20 × 43,675,266.80
  4. Step 4: Simplify right side
    86,914,881.20x = 5,694,733,666,171,596
  5. Step 5: Solve for x
    x = 5,694,733,666,171,596/86,914,881.20
  6. Step 6: Final answer
    x = 65,520,812.86

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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.