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Finding the Fourth Proportional to 71,114.53, 98,140.89 and 40,899.84

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Solution

The fourth proportional to 71,114.53, 98,140.89 and 40,899.84 is: 56,443.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,114.53 : 98,140.89 = 40,899.84 : x
  2. Step 2: Convert to fraction form
    71,114.53/98,140.89 = 40,899.84/x
  3. Step 3: Cross multiply
    71,114.53x = 98,140.89 × 40,899.84
  4. Step 4: Simplify right side
    71,114.53x = 4,013,946,698.46
  5. Step 5: Solve for x
    x = 4,013,946,698.46/71,114.53
  6. Step 6: Final answer
    x = 56,443.41

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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.