Home / 77,619,857.70-116,429,786.55-66,078,730.65

Finding the Fourth Proportional to 77,619,857.70, 116,429,786.55 and 66,078,730.65

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Solution

The fourth proportional to 77,619,857.70, 116,429,786.55 and 66,078,730.65 is: 99,118,095.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,619,857.70 : 116,429,786.55 = 66,078,730.65 : x
  2. Step 2: Convert to fraction form
    77,619,857.70/116,429,786.55 = 66,078,730.65/x
  3. Step 3: Cross multiply
    77,619,857.70x = 116,429,786.55 × 66,078,730.65
  4. Step 4: Simplify right side
    77,619,857.70x = 7,693,532,505,074,442
  5. Step 5: Solve for x
    x = 7,693,532,505,074,442/77,619,857.70
  6. Step 6: Final answer
    x = 99,118,095.98

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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.