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Finding the Fourth Proportional to 61,340.20, 92,010.28 and 19,787.20

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Solution

The fourth proportional to 61,340.20, 92,010.28 and 19,787.20 is: 29,680.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,340.20 : 92,010.28 = 19,787.20 : x
  2. Step 2: Convert to fraction form
    61,340.20/92,010.28 = 19,787.20/x
  3. Step 3: Cross multiply
    61,340.20x = 92,010.28 × 19,787.20
  4. Step 4: Simplify right side
    61,340.20x = 1,820,625,812.42
  5. Step 5: Solve for x
    x = 1,820,625,812.42/61,340.20
  6. Step 6: Final answer
    x = 29,680.79

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1.5x scale

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.