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Finding the Fourth Proportional to 64,724,425.20, 97,086,637.80 and 16,855,369.20

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Solution

The fourth proportional to 64,724,425.20, 97,086,637.80 and 16,855,369.20 is: 25,283,053.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,724,425.20 : 97,086,637.80 = 16,855,369.20 : x
  2. Step 2: Convert to fraction form
    64,724,425.20/97,086,637.80 = 16,855,369.20/x
  3. Step 3: Cross multiply
    64,724,425.20x = 97,086,637.80 × 16,855,369.20
  4. Step 4: Simplify right side
    64,724,425.20x = 1,636,431,124,505,675.75
  5. Step 5: Solve for x
    x = 1,636,431,124,505,675.75/64,724,425.20
  6. Step 6: Final answer
    x = 25,283,053.80

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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.