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Finding the Fourth Proportional to 71,078,430, 106,617,645 and 17,225,742

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Solution

The fourth proportional to 71,078,430, 106,617,645 and 17,225,742 is: 25,838,613

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,078,430 : 106,617,645 = 17,225,742 : x
  2. Step 2: Convert to fraction form
    71,078,430/106,617,645 = 17,225,742/x
  3. Step 3: Cross multiply
    71,078,430x = 106,617,645 × 17,225,742
  4. Step 4: Simplify right side
    71,078,430x = 1,836,568,045,417,590
  5. Step 5: Solve for x
    x = 1,836,568,045,417,590/71,078,430
  6. Step 6: Final answer
    x = 25,838,613

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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.