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Finding the Fourth Proportional to 52,507,357.70, 78,761,036.55 and 45,429,469.70

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Solution

The fourth proportional to 52,507,357.70, 78,761,036.55 and 45,429,469.70 is: 68,144,204.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,507,357.70 : 78,761,036.55 = 45,429,469.70 : x
  2. Step 2: Convert to fraction form
    52,507,357.70/78,761,036.55 = 45,429,469.70/x
  3. Step 3: Cross multiply
    52,507,357.70x = 78,761,036.55 × 45,429,469.70
  4. Step 4: Simplify right side
    52,507,357.70x = 3,578,072,123,488,817.50
  5. Step 5: Solve for x
    x = 3,578,072,123,488,817.50/52,507,357.70
  6. Step 6: Final answer
    x = 68,144,204.55

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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.