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Finding the Fourth Proportional to 71,358,475.70, 100,103,419.90 and 71,358,475.70

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Solution

The fourth proportional to 71,358,475.70, 100,103,419.90 and 71,358,475.70 is: 100,103,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,358,475.70 : 100,103,419.90 = 71,358,475.70 : x
  2. Step 2: Convert to fraction form
    71,358,475.70/100,103,419.90 = 71,358,475.70/x
  3. Step 3: Cross multiply
    71,358,475.70x = 100,103,419.90 × 71,358,475.70
  4. Step 4: Simplify right side
    71,358,475.70x = 7,143,227,456,421,047
  5. Step 5: Solve for x
    x = 7,143,227,456,421,047/71,358,475.70
  6. Step 6: Final answer
    x = 100,103,419.90

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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.