Home / 99,411.11-137,191.11-56,977.83

Finding the Fourth Proportional to 99,411.11, 137,191.11 and 56,977.83

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Solution

The fourth proportional to 99,411.11, 137,191.11 and 56,977.83 is: 78,631.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,411.11 : 137,191.11 = 56,977.83 : x
  2. Step 2: Convert to fraction form
    99,411.11/137,191.11 = 56,977.83/x
  3. Step 3: Cross multiply
    99,411.11x = 137,191.11 × 56,977.83
  4. Step 4: Simplify right side
    99,411.11x = 7,816,851,743.09
  5. Step 5: Solve for x
    x = 7,816,851,743.09/99,411.11
  6. Step 6: Final answer
    x = 78,631.57

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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.