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Finding the Fourth Proportional to 61,644.56, 85,070.20 and 34,787.40

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Solution

The fourth proportional to 61,644.56, 85,070.20 and 34,787.40 is: 48,007.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,644.56 : 85,070.20 = 34,787.40 : x
  2. Step 2: Convert to fraction form
    61,644.56/85,070.20 = 34,787.40/x
  3. Step 3: Cross multiply
    61,644.56x = 85,070.20 × 34,787.40
  4. Step 4: Simplify right side
    61,644.56x = 2,959,371,075.48
  5. Step 5: Solve for x
    x = 2,959,371,075.48/61,644.56
  6. Step 6: Final answer
    x = 48,007.01

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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.