Home / 78,022,069.70-117,075,951.50-45,272,682.36

Finding the Fourth Proportional to 78,022,069.70, 117,075,951.50 and 45,272,682.36

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Solution

The fourth proportional to 78,022,069.70, 117,075,951.50 and 45,272,682.36 is: 67,933,885.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,022,069.70 : 117,075,951.50 = 45,272,682.36 : x
  2. Step 2: Convert to fraction form
    78,022,069.70/117,075,951.50 = 45,272,682.36/x
  3. Step 3: Cross multiply
    78,022,069.70x = 117,075,951.50 × 45,272,682.36
  4. Step 4: Simplify right side
    78,022,069.70x = 5,300,342,364,027,902
  5. Step 5: Solve for x
    x = 5,300,342,364,027,902/78,022,069.70
  6. Step 6: Final answer
    x = 67,933,885.69

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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.