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Finding the Fourth Proportional to 61,643.48, 85,066.54 and 34,787.12

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Solution

The fourth proportional to 61,643.48, 85,066.54 and 34,787.12 is: 48,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,643.48 : 85,066.54 = 34,787.12 : x
  2. Step 2: Convert to fraction form
    61,643.48/85,066.54 = 34,787.12/x
  3. Step 3: Cross multiply
    61,643.48x = 85,066.54 × 34,787.12
  4. Step 4: Simplify right side
    61,643.48x = 2,959,219,422.66
  5. Step 5: Solve for x
    x = 2,959,219,422.66/61,643.48
  6. Step 6: Final answer
    x = 48,005.40

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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.