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Finding the Fourth Proportional to 61,880.40, 92,820.60 and 40,885.20

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Solution

The fourth proportional to 61,880.40, 92,820.60 and 40,885.20 is: 61,327.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,880.40 : 92,820.60 = 40,885.20 : x
  2. Step 2: Convert to fraction form
    61,880.40/92,820.60 = 40,885.20/x
  3. Step 3: Cross multiply
    61,880.40x = 92,820.60 × 40,885.20
  4. Step 4: Simplify right side
    61,880.40x = 3,794,988,795.12
  5. Step 5: Solve for x
    x = 3,794,988,795.12/61,880.40
  6. Step 6: Final answer
    x = 61,327.80

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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.