Home / 76,834.66-105,981.86-54,206.50

Finding the Fourth Proportional to 76,834.66, 105,981.86 and 54,206.50

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Solution

The fourth proportional to 76,834.66, 105,981.86 and 54,206.50 is: 74,769.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,834.66 : 105,981.86 = 54,206.50 : x
  2. Step 2: Convert to fraction form
    76,834.66/105,981.86 = 54,206.50/x
  3. Step 3: Cross multiply
    76,834.66x = 105,981.86 × 54,206.50
  4. Step 4: Simplify right side
    76,834.66x = 5,744,905,694.09
  5. Step 5: Solve for x
    x = 5,744,905,694.09/76,834.66
  6. Step 6: Final answer
    x = 74,769.72

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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.