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Finding the Fourth Proportional to 61,515.60, 92,264.63 and 19,390.20

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Solution

The fourth proportional to 61,515.60, 92,264.63 and 19,390.20 is: 29,082.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,515.60 : 92,264.63 = 19,390.20 : x
  2. Step 2: Convert to fraction form
    61,515.60/92,264.63 = 19,390.20/x
  3. Step 3: Cross multiply
    61,515.60x = 92,264.63 × 19,390.20
  4. Step 4: Simplify right side
    61,515.60x = 1,789,029,628.63
  5. Step 5: Solve for x
    x = 1,789,029,628.63/61,515.60
  6. Step 6: Final answer
    x = 29,082.54

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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.