Home / 99,631.15-137,491.63-59,346.61

Finding the Fourth Proportional to 99,631.15, 137,491.63 and 59,346.61

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Solution

The fourth proportional to 99,631.15, 137,491.63 and 59,346.61 is: 81,898.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,631.15 : 137,491.63 = 59,346.61 : x
  2. Step 2: Convert to fraction form
    99,631.15/137,491.63 = 59,346.61/x
  3. Step 3: Cross multiply
    99,631.15x = 137,491.63 × 59,346.61
  4. Step 4: Simplify right side
    99,631.15x = 8,159,661,651.78
  5. Step 5: Solve for x
    x = 8,159,661,651.78/99,631.15
  6. Step 6: Final answer
    x = 81,898.70

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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.