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Finding the Fourth Proportional to 87,417,817.40, 122,564,103.40 and 87,417,817.40

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Solution

The fourth proportional to 87,417,817.40, 122,564,103.40 and 87,417,817.40 is: 122,564,103.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,417,817.40 : 122,564,103.40 = 87,417,817.40 : x
  2. Step 2: Convert to fraction form
    87,417,817.40/122,564,103.40 = 87,417,817.40/x
  3. Step 3: Cross multiply
    87,417,817.40x = 122,564,103.40 × 87,417,817.40
  4. Step 4: Simplify right side
    87,417,817.40x = 10,714,286,410,815,920
  5. Step 5: Solve for x
    x = 10,714,286,410,815,920/87,417,817.40
  6. Step 6: Final answer
    x = 122,564,103.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.