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Finding the Fourth Proportional to 105,672.88, 158,530.04 and 39,113.57

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Solution

The fourth proportional to 105,672.88, 158,530.04 and 39,113.57 is: 58,678.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,672.88 : 158,530.04 = 39,113.57 : x
  2. Step 2: Convert to fraction form
    105,672.88/158,530.04 = 39,113.57/x
  3. Step 3: Cross multiply
    105,672.88x = 158,530.04 × 39,113.57
  4. Step 4: Simplify right side
    105,672.88x = 6,200,675,621.07
  5. Step 5: Solve for x
    x = 6,200,675,621.07/105,672.88
  6. Step 6: Final answer
    x = 58,678.03

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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.