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Finding the Fourth Proportional to 70,405.65, 105,606.63 and 23,658.51

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Solution

The fourth proportional to 70,405.65, 105,606.63 and 23,658.51 is: 35,487.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,405.65 : 105,606.63 = 23,658.51 : x
  2. Step 2: Convert to fraction form
    70,405.65/105,606.63 = 23,658.51/x
  3. Step 3: Cross multiply
    70,405.65x = 105,606.63 × 23,658.51
  4. Step 4: Simplify right side
    70,405.65x = 2,498,495,511.92
  5. Step 5: Solve for x
    x = 2,498,495,511.92/70,405.65
  6. Step 6: Final answer
    x = 35,487.15

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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.