Home / 77,405,068.65-115,971,398.64-72,796,884.69

Finding the Fourth Proportional to 77,405,068.65, 115,971,398.64 and 72,796,884.69

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Solution

The fourth proportional to 77,405,068.65, 115,971,398.64 and 72,796,884.69 is: 109,067,231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,405,068.65 : 115,971,398.64 = 72,796,884.69 : x
  2. Step 2: Convert to fraction form
    77,405,068.65/115,971,398.64 = 72,796,884.69/x
  3. Step 3: Cross multiply
    77,405,068.65x = 115,971,398.64 × 72,796,884.69
  4. Step 4: Simplify right side
    77,405,068.65x = 8,442,356,534,134,103
  5. Step 5: Solve for x
    x = 8,442,356,534,134,103/77,405,068.65
  6. Step 6: Final answer
    x = 109,067,231.40

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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.