Home / 81,188,815.71-111,932,178.98-64,498,933.11

Finding the Fourth Proportional to 81,188,815.71, 111,932,178.98 and 64,498,933.11

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Solution

The fourth proportional to 81,188,815.71, 111,932,178.98 and 64,498,933.11 is: 88,922,421.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,188,815.71 : 111,932,178.98 = 64,498,933.11 : x
  2. Step 2: Convert to fraction form
    81,188,815.71/111,932,178.98 = 64,498,933.11/x
  3. Step 3: Cross multiply
    81,188,815.71x = 111,932,178.98 × 64,498,933.11
  4. Step 4: Simplify right side
    81,188,815.71x = 7,219,506,124,565,073
  5. Step 5: Solve for x
    x = 7,219,506,124,565,073/81,188,815.71
  6. Step 6: Final answer
    x = 88,922,421.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.