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Finding the Fourth Proportional to 61,830.60, 92,748.60 and 20,277.60

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Solution

The fourth proportional to 61,830.60, 92,748.60 and 20,277.60 is: 30,417.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,830.60 : 92,748.60 = 20,277.60 : x
  2. Step 2: Convert to fraction form
    61,830.60/92,748.60 = 20,277.60/x
  3. Step 3: Cross multiply
    61,830.60x = 92,748.60 × 20,277.60
  4. Step 4: Simplify right side
    61,830.60x = 1,880,719,011.36
  5. Step 5: Solve for x
    x = 1,880,719,011.36/61,830.60
  6. Step 6: Final answer
    x = 30,417.29

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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.