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Finding the Fourth Proportional to 71,685.46, 98,931.14 and 43,006.36

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Solution

The fourth proportional to 71,685.46, 98,931.14 and 43,006.36 is: 59,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,685.46 : 98,931.14 = 43,006.36 : x
  2. Step 2: Convert to fraction form
    71,685.46/98,931.14 = 43,006.36/x
  3. Step 3: Cross multiply
    71,685.46x = 98,931.14 × 43,006.36
  4. Step 4: Simplify right side
    71,685.46x = 4,254,668,222.05
  5. Step 5: Solve for x
    x = 4,254,668,222.05/71,685.46
  6. Step 6: Final answer
    x = 59,351.90

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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.