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Finding the Fourth Proportional to 61,981.61, 85,533.98 and 33,687.09

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Solution

The fourth proportional to 61,981.61, 85,533.98 and 33,687.09 is: 46,487.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,981.61 : 85,533.98 = 33,687.09 : x
  2. Step 2: Convert to fraction form
    61,981.61/85,533.98 = 33,687.09/x
  3. Step 3: Cross multiply
    61,981.61x = 85,533.98 × 33,687.09
  4. Step 4: Simplify right side
    61,981.61x = 2,881,390,713.88
  5. Step 5: Solve for x
    x = 2,881,390,713.88/61,981.61
  6. Step 6: Final answer
    x = 46,487.84

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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.