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Finding the Fourth Proportional to 71,638.40, 98,855.16 and 44,762.60

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Solution

The fourth proportional to 71,638.40, 98,855.16 and 44,762.60 is: 61,768.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,638.40 : 98,855.16 = 44,762.60 : x
  2. Step 2: Convert to fraction form
    71,638.40/98,855.16 = 44,762.60/x
  3. Step 3: Cross multiply
    71,638.40x = 98,855.16 × 44,762.60
  4. Step 4: Simplify right side
    71,638.40x = 4,425,013,985.02
  5. Step 5: Solve for x
    x = 4,425,013,985.02/71,638.40
  6. Step 6: Final answer
    x = 61,768.74

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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.